4.65.3

app/.dockerignore

@@ -14,4 +14,4 @@ venv/
 .venv
 .coverage
 htmlcov
-.git/
+.git/

app/.github/workflows/main.yml

@@ -1,6 +1,12 @@
-name: Test and lint
+name: SimpleLogin actions
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+  pull_request:
 
 jobs:
   lint:
@@ -9,35 +15,34 @@ jobs:
       - name: Check out repo
         uses: actions/checkout@v3
 
-      - name: Install poetry
-        run: pipx install poetry
-
-      - uses: actions/setup-python@v4
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
         with:
-          python-version: '3.10'
-          cache: 'poetry'
+          # Install a specific version of uv.
+          version: "0.5.21"
+          enable-cache: true
 
       - name: Install OS dependencies
-        if: ${{ matrix.python-version }} == '3.10'
         run: |
           sudo apt update
           sudo apt install -y libre2-dev libpq-dev
 
+      - name: "Set up Python"
+        uses: actions/setup-python@v5
+        with:
+          python-version-file: "pyproject.toml"
+
       - name: Install dependencies
-        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
-        run: poetry install --no-interaction
+        if: steps.setup-uv.outputs.cache-hit != 'true'
+        run: uv sync --locked --all-extras
 
       - name: Check formatting & linting
         run: |
-          poetry run pre-commit run --all-files
+          uv run pre-commit run --all-files
 
 
   test:
     runs-on: ubuntu-latest
-    strategy:
-      max-parallel: 4
-      matrix:
-        python-version: ["3.10"]
 
     # service containers to run with `postgres-job`
     services:
@@ -69,23 +74,26 @@ jobs:
       - name: Check out repo
         uses: actions/checkout@v3
 
-      - name: Install poetry
-        run: pipx install poetry
-
-      - uses: actions/setup-python@v4
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
         with:
-          python-version: ${{ matrix.python-version }}
-          cache: 'poetry'
+          # Install a specific version of uv.
+          version: "0.5.21"
+          enable-cache: true
 
       - name: Install OS dependencies
-        if: ${{ matrix.python-version }} == '3.10'
         run: |
           sudo apt update
           sudo apt install -y libre2-dev libpq-dev
 
+      - name: "Set up Python"
+        uses: actions/setup-python@v5
+        with:
+          python-version-file: "pyproject.toml"
+
       - name: Install dependencies
-        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
-        run: poetry install --no-interaction
+        if: steps.setup-uv.outputs.cache-hit != 'true'
+        run: uv sync --locked --all-extras
 
 
       - name: Start Redis v6
@@ -95,21 +103,21 @@ jobs:
 
       - name: Run db migration
         run: |
-          CONFIG=tests/test.env poetry run alembic upgrade head
+          CONFIG=tests/test.env uv run alembic upgrade head
 
       - name: Prepare version file
         run: |
-          scripts/generate-build-info.sh ${{ github.sha }}
+          scripts/generate-build-info.sh ${{ github.sha }} ${{ github.ref_name }}
           cat app/build_info.py
 
       - name: Test with pytest
         run: |
-          poetry run pytest
+          uv run pytest
         env:
           GITHUB_ACTIONS_TEST: true
 
       - name: Archive code coverage results
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: code-coverage-report
           path: htmlcov
@@ -156,14 +164,14 @@ jobs:
 
       - name: Prepare version file
         run: |
-          scripts/generate-build-info.sh ${{ github.sha }}
+          scripts/generate-build-info.sh ${{ github.sha }} ${{ github.ref_name }}
           cat app/build_info.py
 
       - name: Build image and publish to Docker Registry
         uses: docker/build-push-action@v3
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
 

app/.gitignore

@@ -11,8 +11,7 @@ db.sqlite-journal
 static/upload
 venv/
 .venv
-.python-version
 .coverage
 htmlcov
 adhoc
-.env.*
+.env.*

app/.pre-commit-config.yaml

@@ -8,7 +8,7 @@ repos:
       - id: check-yaml
       - id: trailing-whitespace
   - repo: https://github.com/Riverside-Healthcare/djLint
-    rev: v1.3.0
+    rev: v1.34.1
     hooks:
       - id: djlint-jinja
         files: '.*\.html'
@@ -21,5 +21,4 @@ repos:
       - id: ruff
         args: [ --fix ]
       # Run the formatter.
-      - id: ruff-format
-
+      - id: ruff-format

app/.python-version

@@ -0,0 +1 @@
+3.10.16

app/CONTRIBUTING.md

@@ -20,15 +20,15 @@ SimpleLogin backend consists of 2 main components:
 ## Install dependencies
 
 The project requires:
-- Python 3.7+ and [poetry](https://python-poetry.org/) to manage dependencies
+- Python 3.10 and uv to manage dependencies
 - Node v10 for front-end.
-- Postgres 12+
+- Postgres 13+
 
 First, install all dependencies by running the following command.
 Feel free to use `virtualenv` or similar tools to isolate development environment.
 
 ```bash
-poetry install
+uv sync
 ```
 
 On Mac, sometimes you might need to install some other packages via `brew`:
@@ -55,7 +55,7 @@ brew install -s re2 pybind11
 We use pre-commit to run all our linting and static analysis checks. Please run
 
 ```bash
-poetry run pre-commit install
+uv run pre-commit install
 ```
 
 To install it in your development environment.
@@ -68,6 +68,12 @@ For most tests, you will need to have ``redis`` installed and started on your ma
 sh scripts/run-test.sh
 ```
 
+You can also run tests using a local Postgres DB to speed things up. This can be done by
+
+- creating an empty test DB and running the database migration by `dropdb test && createdb test && DB_URI=postgresql://localhost:5432/test alembic upgrade head`
+
+- replacing the `DB_URI` in `test.env` file by `DB_URI=postgresql://localhost:5432/test`
+
 ## Run the code locally
 
 Install npm packages
@@ -154,25 +160,25 @@ Here are the small sum-ups of the directory structures and their roles:
 The code is formatted using [ruff](https://github.com/astral-sh/ruff), to format the code, simply run
 
 ```
-poetry run ruff format .
+uv run ruff format .
 ```
 
 The code is also checked with `flake8`, make sure to run `flake8` before creating the pull request by
 
 ```bash
-poetry run flake8
+uv run flake8
 ```
 
 For HTML templates, we use `djlint`. Before creating a pull request, please run
 
 ```bash
-poetry run djlint --check templates
+uv run djlint --check templates
 ```
 
 If some files aren't properly formatted, you can format all files with
 
 ```bash
-poetry run djlint --reformat .
+uv run djlint --reformat .
 ```
 
 ## Test sending email
@@ -217,6 +223,31 @@ Now open http://localhost:1080/ (or http://localhost:1080/ for MailHog), you sho
 ## Job runner
 
 Some features require a job handler (such as GDPR data export). To test such feature you need to run the job_runner
+
 ```bash
 python job_runner.py
-```
+```
+
+# Setup for Mac
+
+There are several ways to setup Python and manage the project dependencies on Mac. For info we have successfully used this setup on a Mac silicon:
+
+```bash
+# we haven't managed to make python 3.12 work
+brew install python3.10
+
+# make sure to update the PATH so python, pip point to Python3
+# for us it can be done by adding "export PATH=/opt/homebrew/opt/python@3.10/libexec/bin:$PATH" to .zprofile
+
+# Although pipx is the recommended way to install uv,
+# install pipx via brew will automatically install python 3.12
+# and uv will then use python 3.12
+# so we recommend using uv this way instead
+curl -sSL https://install.python-uv.org | python3 -
+
+uv install
+
+# activate the virtualenv and you should be good to go!
+source .venv/bin/activate
+
+```

app/Dockerfile

@@ -4,43 +4,47 @@ WORKDIR /code
 COPY ./static/package*.json /code/static/
 RUN cd /code/static && npm ci
 
-# Main image
-FROM python:3.10
+FROM --platform=linux/amd64 ubuntu:22.04
+
+ARG UV_VERSION="0.5.21"
+ARG UV_HASH="e108c300eafae22ad8e6d94519605530f18f8762eb58d2b98a617edfb5d088fc"
 
 # Keeps Python from generating .pyc files in the container
-ENV PYTHONDONTWRITEBYTECODE 1
+ENV PYTHONDONTWRITEBYTECODE=1
 # Turns off buffering for easier container logging
-ENV PYTHONUNBUFFERED 1
+ENV PYTHONUNBUFFERED=1
 
-# Add poetry to PATH
-ENV PATH="${PATH}:/root/.local/bin"
 
 WORKDIR /code
 
-# Copy poetry files
-COPY poetry.lock pyproject.toml ./
+# Copy dependency files
+COPY pyproject.toml uv.lock .python-version ./
 
-# Install and setup poetry
-RUN pip install -U pip \
-    && apt-get update \
-    && apt install -y curl netcat-traditional gcc python3-dev gnupg git libre2-dev cmake ninja-build\
-    && curl -sSL https://install.python-poetry.org | python3 - \
-    # Remove curl and netcat from the image
-    && apt-get purge -y curl netcat-traditional \
-    # Run poetry
-    && poetry config virtualenvs.create false \
-    && poetry install  --no-interaction --no-ansi --no-root \
-    # Clear apt cache \
-    && apt-get purge -y libre2-dev cmake ninja-build\
+# Install deps
+RUN apt-get update \
+    && apt-get install -y curl netcat-traditional gcc python3-dev gnupg git libre2-dev build-essential pkg-config cmake ninja-build bash clang \
+    && curl -sSL "https://github.com/astral-sh/uv/releases/download/${UV_VERSION}/uv-x86_64-unknown-linux-gnu.tar.gz" > uv.tar.gz \
+    && echo "${UV_HASH}  uv.tar.gz" | sha256sum -c - \
+    && tar xf uv.tar.gz -C /tmp/ \
+    && mv /tmp/uv-x86_64-unknown-linux-gnu/uv /usr/bin/uv \
+    && mv /tmp/uv-x86_64-unknown-linux-gnu/uvx /usr/bin/uvx \
+    && rm -rf /tmp/uv* \
+    && rm -f uv.tar.gz \
+    && uv python install `cat .python-version` \
+    && uv sync --locked \
+    && apt-get autoremove -y \
+    && apt-get purge -y curl netcat-traditional build-essential pkg-config cmake ninja-build python3-dev clang\
+    && apt-get autoremove -y \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
+# Copy code
+COPY . .
+
 # copy npm packages
 COPY --from=npm /code /code
 
-# copy everything else into /code
-COPY . .
-
+ENV PATH="/code/.venv/bin:$PATH"
 EXPOSE 7777
 
 #gunicorn wsgi:app -b 0.0.0.0:7777 -w 2 --timeout 15 --log-level DEBUG

app/README.md

@@ -84,7 +84,7 @@ For email gurus, we have chosen 1024 key length instead of 2048 for DNS simplici
 
 ### DNS
 
-Please note that DNS changes could take up to 24 hours to propagate. In practice, it's a lot faster though (~1 minute or so in our test). In DNS setup, we usually use domain with a trailing dot (`.`) at the end to to force using absolute domain.
+Please note that DNS changes could take up to 24 hours to propagate. In practice, it's a lot faster though (~1 minute or so in our test). In DNS setup, we usually use domain with a trailing dot (`.`) at the end to force using absolute domain.
 
 
 #### MX record
@@ -541,7 +541,7 @@ exit
 
 Once you've created all your desired login accounts, add these lines to `/simplelogin.env` to disable further registrations:
 
-```
+```.env
 DISABLE_REGISTRATION=1
 DISABLE_ONBOARDING=true
 ```

app/SECURITY.md

@@ -7,8 +7,4 @@ If you want be up to date on security patches, make sure your SimpleLogin image
 
 ## Reporting a Vulnerability
 
-If you've found a security vulnerability, you can disclose it responsibly by sending a summary to security@simplelogin.io.
-We will review the potential threat and fix it as fast as we can.
-
-We are incredibly thankful for people who disclose vulnerabilities, unfortunately we do not have a bounty program in place yet.
-
+If you want to report a vulnerability, please take a look at our bug bounty program at https://proton.me/security/bug-bounty.

app/app/account_linking.py

@@ -3,12 +3,17 @@ from dataclasses import dataclass
 from enum import Enum
 from typing import Optional
 
+import sqlalchemy.exc
 from arrow import Arrow
 from newrelic import agent
+from psycopg2.errors import UniqueViolation
 from sqlalchemy import or_
 
 from app.db import Session
 from app.email_utils import send_welcome_email
+from app.events.event_dispatcher import EventDispatcher
+from app.events.generated.event_pb2 import UserPlanChanged, EventContent
+from app.partner_user_utils import create_partner_user, create_partner_subscription
 from app.utils import sanitize_email, canonicalize_email
 from app.errors import (
     AccountAlreadyLinkedToAnotherPartnerException,
@@ -23,12 +28,14 @@ from app.models import (
     User,
     Alias,
 )
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 from app.utils import random_string
 
 
 class SLPlanType(Enum):
     Free = 1
     Premium = 2
+    PremiumLifetime = 3
 
 
 @dataclass
@@ -52,8 +59,26 @@ class LinkResult:
     strategy: str
 
 
+def send_user_plan_changed_event(
+    partner_user: PartnerUser,
+) -> UserPlanChanged:
+    subscription_end = partner_user.user.get_active_subscription_end(
+        include_partner_subscription=False
+    )
+    if partner_user.user.lifetime:
+        event = UserPlanChanged(lifetime=True)
+    elif subscription_end:
+        event = UserPlanChanged(plan_end_time=subscription_end.timestamp)
+    else:
+        event = UserPlanChanged(plan_end_time=None)
+    EventDispatcher.send_event(partner_user.user, EventContent(user_plan_change=event))
+    Session.flush()
+    return event
+
+
 def set_plan_for_partner_user(partner_user: PartnerUser, plan: SLPlan):
     sub = PartnerSubscription.get_by(partner_user_id=partner_user.id)
+    is_lifetime = plan.type == SLPlanType.PremiumLifetime
     if plan.type == SLPlanType.Free:
         if sub is not None:
             LOG.i(
@@ -62,24 +87,37 @@ def set_plan_for_partner_user(partner_user: PartnerUser, plan: SLPlan):
             PartnerSubscription.delete(sub.id)
             agent.record_custom_event("PlanChange", {"plan": "free"})
     else:
+        end_time = plan.expiration
+        if plan.type == SLPlanType.PremiumLifetime:
+            end_time = None
         if sub is None:
             LOG.i(
-                f"Creating partner_subscription [user_id={partner_user.user_id}] [partner_id={partner_user.partner_id}]"
+                f"Creating partner_subscription [user_id={partner_user.user_id}] [partner_id={partner_user.partner_id}] with {end_time} / {is_lifetime}"
             )
-            PartnerSubscription.create(
-                partner_user_id=partner_user.id,
-                end_at=plan.expiration,
+            create_partner_subscription(
+                partner_user=partner_user,
+                expiration=end_time,
+                lifetime=is_lifetime,
+                msg="Upgraded via partner. User did not have a previous partner subscription",
             )
             agent.record_custom_event("PlanChange", {"plan": "premium", "type": "new"})
         else:
-            if sub.end_at != plan.expiration:
-                LOG.i(
-                    f"Updating partner_subscription [user_id={partner_user.user_id}] [partner_id={partner_user.partner_id}]"
-                )
+            if sub.end_at != plan.expiration or sub.lifetime != is_lifetime:
                 agent.record_custom_event(
                     "PlanChange", {"plan": "premium", "type": "extension"}
                 )
-                sub.end_at = plan.expiration
+                sub.end_at = plan.expiration if not is_lifetime else None
+                sub.lifetime = is_lifetime
+                LOG.i(
+                    f"Updating partner_subscription [user_id={partner_user.user_id}] [partner_id={partner_user.partner_id}] to {sub.end_at} / {sub.lifetime} "
+                )
+                emit_user_audit_log(
+                    user=partner_user.user,
+                    action=UserAuditLogAction.SubscriptionExtended,
+                    message="Extended partner subscription",
+                )
+    Session.flush()
+    send_user_plan_changed_event(partner_user)
     Session.commit()
 
 
@@ -98,12 +136,13 @@ def ensure_partner_user_exists_for_user(
     if res and res.partner_id != partner.id:
         raise AccountAlreadyLinkedToAnotherPartnerException()
     if not res:
-        res = PartnerUser.create(
-            user_id=sl_user.id,
+        res = create_partner_user(
+            user=sl_user,
             partner_id=partner.id,
             partner_email=link_request.email,
             external_user_id=link_request.external_user_id,
         )
+
         Session.commit()
         LOG.i(
             f"Created new partner_user for partner:{partner.id} user:{sl_user.id} external_user_id:{link_request.external_user_id}. PartnerUser.id is {res.id}"
@@ -131,17 +170,59 @@ class ClientMergeStrategy(ABC):
 
 class NewUserStrategy(ClientMergeStrategy):
     def process(self) -> LinkResult:
-        # Will create a new SL User with a random password
         canonical_email = canonicalize_email(self.link_request.email)
-        new_user = User.create(
-            email=canonical_email,
-            name=self.link_request.name,
-            password=random_string(20),
-            activated=True,
-            from_partner=self.link_request.from_partner,
+        try:
+            # Will create a new SL User with a random password
+            new_user = User.create(
+                email=canonical_email,
+                name=self.link_request.name,
+                password=random_string(20),
+                activated=True,
+                from_partner=self.link_request.from_partner,
+            )
+            self.create_partner_user(new_user)
+            Session.commit()
+
+            if not new_user.created_by_partner:
+                send_welcome_email(new_user)
+
+            agent.record_custom_event(
+                "PartnerUserCreation", {"partner": self.partner.name}
+            )
+
+            return LinkResult(
+                user=new_user,
+                strategy=self.__class__.__name__,
+            )
+        except (UniqueViolation, sqlalchemy.exc.IntegrityError) as e:
+            Session.rollback()
+            LOG.debug(f"Got the duplicate user error: {e}")
+            return self.create_missing_link(canonical_email)
+
+    def create_missing_link(self, canonical_email: str):
+        # If there's a unique key violation due to race conditions try to create only the partner if needed
+        partner_user = PartnerUser.get_by(
+            external_user_id=self.link_request.external_user_id,
+            partner_id=self.partner.id,
         )
-        partner_user = PartnerUser.create(
-            user_id=new_user.id,
+        if partner_user is None:
+            # Get the user by canonical email and if not by normal email
+            user = User.get_by(email=canonical_email) or User.get_by(
+                email=self.link_request.email
+            )
+            if not user:
+                raise RuntimeError(
+                    "Tried to create only partner on UniqueViolation but cannot find the user"
+                )
+            partner_user = self.create_partner_user(user)
+            Session.commit()
+        return LinkResult(
+            user=partner_user.user, strategy=ExistingUnlinkedUserStrategy.__name__
+        )
+
+    def create_partner_user(self, new_user: User):
+        partner_user = create_partner_user(
+            user=new_user,
             partner_id=self.partner.id,
             external_user_id=self.link_request.external_user_id,
             partner_email=self.link_request.email,
@@ -153,17 +234,7 @@ class NewUserStrategy(ClientMergeStrategy):
             partner_user,
             self.link_request.plan,
         )
-        Session.commit()
-
-        if not new_user.created_by_partner:
-            send_welcome_email(new_user)
-
-        agent.record_custom_event("PartnerUserCreation", {"partner": self.partner.name})
-
-        return LinkResult(
-            user=new_user,
-            strategy=self.__class__.__name__,
-        )
+        return partner_user
 
 
 class ExistingUnlinkedUserStrategy(ClientMergeStrategy):
@@ -200,7 +271,7 @@ def get_login_strategy(
     return ExistingUnlinkedUserStrategy(link_request, user, partner)
 
 
-def check_alias(email: str) -> bool:
+def check_alias(email: str):
     alias = Alias.get_by(email=email)
     if alias is not None:
         raise AccountIsUsingAliasAsEmail()
@@ -275,10 +346,26 @@ def switch_already_linked_user(
         LOG.i(
             f"Deleting previous partner_user:{other_partner_user.id} from user:{current_user.id}"
         )
+
+        emit_user_audit_log(
+            user=other_partner_user.user,
+            action=UserAuditLogAction.UnlinkAccount,
+            message=f"Deleting partner_user {other_partner_user.id} (external_user_id={other_partner_user.external_user_id} | partner_email={other_partner_user.partner_email}) from user {current_user.id}, as we received a new link request for the same partner",
+        )
         PartnerUser.delete(other_partner_user.id)
     LOG.i(f"Linking partner_user:{partner_user.id} to user:{current_user.id}")
     # Link this partner_user to the current user
+    emit_user_audit_log(
+        user=partner_user.user,
+        action=UserAuditLogAction.UnlinkAccount,
+        message=f"Unlinking from partner, as user will now be tied to another external account. old=(id={partner_user.user.id} | email={partner_user.user.email}) | new=(id={current_user.id} | email={current_user.email})",
+    )
     partner_user.user_id = current_user.id
+    emit_user_audit_log(
+        user=current_user,
+        action=UserAuditLogAction.LinkAccount,
+        message=f"Linking user {current_user.id} ({current_user.email}) to partner_user:{partner_user.id} (external_user_id={partner_user.external_user_id} | partner_email={partner_user.partner_email})",
+    )
     # Set plan
     set_plan_for_partner_user(partner_user, link_request.plan)
     Session.commit()

app/app/admin_model.py

@@ -1,18 +1,29 @@
-from typing import Optional
+from __future__ import annotations
+
+from typing import Optional, List
 
 import arrow
 import sqlalchemy
-from flask_admin.model.template import EndpointLinkRowAction
-from markupsafe import Markup
-
-from app import models, s3
 from flask import redirect, url_for, request, flash, Response
+from flask_admin import BaseView
 from flask_admin import expose, AdminIndexView
 from flask_admin.actions import action
 from flask_admin.contrib import sqla
+from flask_admin.form import SecureForm
+from flask_admin.model.template import EndpointLinkRowAction
 from flask_login import current_user
+from markupsafe import Markup
 
+from app import models, s3, config
+from app.custom_domain_validation import (
+    CustomDomainValidation,
+    DomainValidationResult,
+    ExpectedValidationRecords,
+)
 from app.db import Session
+from app.dns_utils import get_network_dns_client
+from app.events.event_dispatcher import EventDispatcher
+from app.events.generated.event_pb2 import EventContent, UserPlanChanged
 from app.models import (
     User,
     ManualSubscription,
@@ -27,8 +38,30 @@ from app.models import (
     Alias,
     Newsletter,
     PADDLE_SUBSCRIPTION_GRACE_DAYS,
+    Mailbox,
+    DeletedAlias,
+    DomainDeletedAlias,
+    PartnerUser,
+    AliasMailbox,
+    AliasAuditLog,
+    UserAuditLog,
+    CustomDomain,
 )
 from app.newsletter_utils import send_newsletter_to_user, send_newsletter_to_address
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+
+
+def _admin_action_formatter(view, context, model, name):
+    action_name = AuditLogActionEnum.get_name(model.action)
+    return "{} ({})".format(action_name, model.action)
+
+
+def _admin_date_formatter(view, context, model, name):
+    return model.created_at.format()
+
+
+def _user_upgrade_channel_formatter(view, context, model, name):
+    return Markup(model.upgrade_channel)
 
 
 class SLModelView(sqla.ModelView):
@@ -46,7 +79,8 @@ class SLModelView(sqla.ModelView):
 
     def inaccessible_callback(self, name, **kwargs):
         # redirect to login page if user doesn't have access
-        return redirect(url_for("auth.login", next=request.url))
+        flash("You don't have access to the admin page", "error")
+        return redirect(url_for("dashboard.index", next=request.url))
 
     def on_model_change(self, form, model, is_created):
         changes = {}
@@ -91,14 +125,11 @@ class SLAdminIndexView(AdminIndexView):
         if not current_user.is_authenticated or not current_user.is_admin:
             return redirect(url_for("auth.login", next=request.url))
 
-        return redirect("/admin/user")
-
-
-def _user_upgrade_channel_formatter(view, context, model, name):
-    return Markup(model.upgrade_channel)
+        return redirect("/admin/email_search")
 
 
 class UserAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["email", "id"]
     column_exclude_list = [
         "salt",
@@ -117,6 +148,8 @@ class UserAdmin(SLModelView):
 
     column_formatters = {
         "upgrade_channel": _user_upgrade_channel_formatter,
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
     }
 
     @action(
@@ -328,32 +361,69 @@ def manual_upgrade(way: str, ids: [int], is_giveaway: bool):
                 manual_sub.end_at = manual_sub.end_at.shift(years=1)
             else:
                 manual_sub.end_at = arrow.now().shift(years=1, days=1)
+            emit_user_audit_log(
+                user=user,
+                action=UserAuditLogAction.Upgrade,
+                message=f"Admin {current_user.email} extended manual subscription to user {user.email}",
+            )
+            EventDispatcher.send_event(
+                user=user,
+                content=EventContent(
+                    user_plan_change=UserPlanChanged(
+                        plan_end_time=manual_sub.end_at.timestamp
+                    )
+                ),
+            )
             flash(f"Subscription extended to {manual_sub.end_at.humanize()}", "success")
-            continue
+        else:
+            emit_user_audit_log(
+                user=user,
+                action=UserAuditLogAction.Upgrade,
+                message=f"Admin {current_user.email} created manual subscription to user {user.email}",
+            )
+            manual_sub = ManualSubscription.create(
+                user_id=user.id,
+                end_at=arrow.now().shift(years=1, days=1),
+                comment=way,
+                is_giveaway=is_giveaway,
+            )
+            EventDispatcher.send_event(
+                user=user,
+                content=EventContent(
+                    user_plan_change=UserPlanChanged(
+                        plan_end_time=manual_sub.end_at.timestamp
+                    )
+                ),
+            )
 
-        ManualSubscription.create(
-            user_id=user.id,
-            end_at=arrow.now().shift(years=1, days=1),
-            comment=way,
-            is_giveaway=is_giveaway,
-        )
-
-        flash(f"New {way} manual subscription for {user} is created", "success")
+            flash(f"New {way} manual subscription for {user} is created", "success")
     Session.commit()
 
 
 class EmailLogAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["id"]
     column_filters = ["id", "user.email", "mailbox.email", "contact.website_email"]
 
     can_edit = False
     can_create = False
 
+    column_formatters = {
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
+    }
+
 
 class AliasAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["id", "user.email", "email", "mailbox.email"]
     column_filters = ["id", "user.email", "email", "mailbox.email"]
 
+    column_formatters = {
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
+    }
+
     @action(
         "disable_email_spoofing_check",
         "Disable email spoofing protection",
@@ -376,9 +446,15 @@ class AliasAdmin(SLModelView):
 
 
 class MailboxAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["id", "user.email", "email"]
     column_filters = ["id", "user.email", "email"]
 
+    column_formatters = {
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
+    }
+
 
 # class LifetimeCouponAdmin(SLModelView):
 #     can_edit = True
@@ -386,28 +462,33 @@ class MailboxAdmin(SLModelView):
 
 
 class CouponAdmin(SLModelView):
+    form_base_class = SecureForm
     can_edit = False
     can_create = True
 
+    column_formatters = {
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
+    }
+
 
 class ManualSubscriptionAdmin(SLModelView):
+    form_base_class = SecureForm
     can_edit = True
     column_searchable_list = ["id", "user.email"]
 
+    column_formatters = {
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
+    }
+
     @action(
         "extend_1y",
         "Extend for 1 year",
         "Extend 1 year more?",
     )
     def extend_1y(self, ids):
-        for ms in ManualSubscription.filter(ManualSubscription.id.in_(ids)):
-            ms.end_at = ms.end_at.shift(years=1)
-            flash(f"Extend subscription for 1 year for {ms.user}", "success")
-            AdminAuditLog.extend_subscription(
-                current_user.id, ms.user.id, ms.end_at, "1 year"
-            )
-
-        Session.commit()
+        self.__extend_manual_subscription(ids, msg="1 year", years=1)
 
     @action(
         "extend_1m",
@@ -415,11 +496,26 @@ class ManualSubscriptionAdmin(SLModelView):
         "Extend 1 month more?",
     )
     def extend_1m(self, ids):
+        self.__extend_manual_subscription(ids, msg="1 month", months=1)
+
+    def __extend_manual_subscription(self, ids: List[int], msg: str, **kwargs):
         for ms in ManualSubscription.filter(ManualSubscription.id.in_(ids)):
-            ms.end_at = ms.end_at.shift(months=1)
-            flash(f"Extend subscription for 1 month for {ms.user}", "success")
+            sub: ManualSubscription = ms
+            sub.end_at = sub.end_at.shift(**kwargs)
+            flash(f"Extend subscription for {msg} for {sub.user}", "success")
+            emit_user_audit_log(
+                user=sub.user,
+                action=UserAuditLogAction.Upgrade,
+                message=f"Admin {current_user.email} extended manual subscription for {msg} for {sub.user}",
+            )
             AdminAuditLog.extend_subscription(
-                current_user.id, ms.user.id, ms.end_at, "1 month"
+                current_user.id, sub.user.id, sub.end_at, msg
+            )
+            EventDispatcher.send_event(
+                user=sub.user,
+                content=EventContent(
+                    user_plan_change=UserPlanChanged(plan_end_time=sub.end_at.timestamp)
+                ),
             )
 
         Session.commit()
@@ -432,15 +528,27 @@ class ManualSubscriptionAdmin(SLModelView):
 
 
 class CustomDomainAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["domain", "user.email", "user.id"]
     column_exclude_list = ["ownership_txt_token"]
     can_edit = False
 
+    column_formatters = {
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
+    }
+
 
 class ReferralAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["id", "user.email", "code", "name"]
     column_filters = ["id", "user.email", "code", "name"]
 
+    column_formatters = {
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
+    }
+
     def scaffold_list_columns(self):
         ret = super().scaffold_list_columns()
         ret.insert(0, "nb_user")
@@ -456,16 +564,8 @@ class ReferralAdmin(SLModelView):
 #     can_delete = True
 
 
-def _admin_action_formatter(view, context, model, name):
-    action_name = AuditLogActionEnum.get_name(model.action)
-    return "{} ({})".format(action_name, model.action)
-
-
-def _admin_created_at_formatter(view, context, model, name):
-    return model.created_at.format()
-
-
 class AdminAuditLogAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["admin.id", "admin.email", "model_id", "created_at"]
     column_filters = ["admin.id", "admin.email", "model_id", "created_at"]
     column_exclude_list = ["id"]
@@ -476,7 +576,8 @@ class AdminAuditLogAdmin(SLModelView):
 
     column_formatters = {
         "action": _admin_action_formatter,
-        "created_at": _admin_created_at_formatter,
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
     }
 
 
@@ -496,6 +597,7 @@ def _transactionalcomplaint_refused_email_id_formatter(view, context, model, nam
 
 
 class ProviderComplaintAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["id", "user.id", "created_at"]
     column_filters = ["user.id", "state"]
     column_hide_backrefs = False
@@ -504,8 +606,8 @@ class ProviderComplaintAdmin(SLModelView):
     can_delete = False
 
     column_formatters = {
-        "created_at": _admin_created_at_formatter,
-        "updated_at": _admin_created_at_formatter,
+        "created_at": _admin_date_formatter,
+        "updated_at": _admin_date_formatter,
         "state": _transactionalcomplaint_state_formatter,
         "phase": _transactionalcomplaint_phase_formatter,
         "refused_email": _transactionalcomplaint_refused_email_id_formatter,
@@ -566,6 +668,7 @@ def _newsletter_html_formatter(view, context, model: Newsletter, name):
 
 
 class NewsletterAdmin(SLModelView):
+    form_base_class = SecureForm
     list_template = "admin/model/newsletter-list.html"
     edit_template = "admin/model/newsletter-edit.html"
     edit_modal = False
@@ -647,6 +750,7 @@ class NewsletterAdmin(SLModelView):
 
 
 class NewsletterUserAdmin(SLModelView):
+    form_base_class = SecureForm
     column_searchable_list = ["id"]
     column_filters = ["id", "user.email", "newsletter.subject"]
     column_exclude_list = ["created_at", "updated_at", "id"]
@@ -656,17 +760,272 @@ class NewsletterUserAdmin(SLModelView):
 
 
 class DailyMetricAdmin(SLModelView):
+    form_base_class = SecureForm
     column_exclude_list = ["created_at", "updated_at", "id"]
 
     can_export = True
 
 
 class MetricAdmin(SLModelView):
+    form_base_class = SecureForm
     column_exclude_list = ["created_at", "updated_at", "id"]
 
     can_export = True
 
 
 class InvalidMailboxDomainAdmin(SLModelView):
+    form_base_class = SecureForm
     can_create = True
     can_delete = True
+
+
+class EmailSearchResult:
+    def __init__(self):
+        self.no_match: bool = True
+        self.alias: Optional[Alias] = None
+        self.alias_audit_log: Optional[List[AliasAuditLog]] = None
+        self.mailbox: List[Mailbox] = []
+        self.mailbox_count: int = 0
+        self.deleted_alias: Optional[DeletedAlias] = None
+        self.deleted_alias_audit_log: Optional[List[AliasAuditLog]] = None
+        self.domain_deleted_alias: Optional[DomainDeletedAlias] = None
+        self.domain_deleted_alias_audit_log: Optional[List[AliasAuditLog]] = None
+        self.user: Optional[User] = None
+        self.user_audit_log: Optional[List[UserAuditLog]] = None
+        self.query: str
+
+    @staticmethod
+    def from_request_email(email: str) -> EmailSearchResult:
+        output = EmailSearchResult()
+        output.query = email
+        alias = Alias.get_by(email=email)
+        if alias:
+            output.alias = alias
+            output.alias_audit_log = (
+                AliasAuditLog.filter_by(alias_id=alias.id)
+                .order_by(AliasAuditLog.created_at.desc())
+                .all()
+            )
+            output.no_match = False
+        try:
+            user_id = int(email)
+            user = User.get(user_id)
+        except ValueError:
+            user = User.get_by(email=email)
+        if user:
+            output.user = user
+            output.user_audit_log = (
+                UserAuditLog.filter_by(user_id=user.id)
+                .order_by(UserAuditLog.created_at.desc())
+                .all()
+            )
+            output.no_match = False
+
+        user_audit_log = (
+            UserAuditLog.filter_by(user_email=email)
+            .order_by(UserAuditLog.created_at.desc())
+            .all()
+        )
+        if user_audit_log:
+            output.user_audit_log = user_audit_log
+            output.no_match = False
+        mailboxes = (
+            Mailbox.filter_by(email=email).order_by(Mailbox.id.desc()).limit(10).all()
+        )
+        if mailboxes:
+            output.mailbox = mailboxes
+            output.mailbox_count = Mailbox.filter_by(email=email).count()
+            output.no_match = False
+        deleted_alias = DeletedAlias.get_by(email=email)
+        if deleted_alias:
+            output.deleted_alias = deleted_alias
+            output.deleted_alias_audit_log = (
+                AliasAuditLog.filter_by(alias_email=deleted_alias.email)
+                .order_by(AliasAuditLog.created_at.desc())
+                .all()
+            )
+            output.no_match = False
+        domain_deleted_alias = DomainDeletedAlias.get_by(email=email)
+        if domain_deleted_alias:
+            output.domain_deleted_alias = domain_deleted_alias
+            output.domain_deleted_alias_audit_log = (
+                AliasAuditLog.filter_by(alias_email=domain_deleted_alias.email)
+                .order_by(AliasAuditLog.created_at.desc())
+                .all()
+            )
+            output.no_match = False
+        return output
+
+
+class EmailSearchHelpers:
+    @staticmethod
+    def mailbox_list(user: User) -> list[Mailbox]:
+        return (
+            Mailbox.filter_by(user_id=user.id)
+            .order_by(Mailbox.id.asc())
+            .limit(10)
+            .all()
+        )
+
+    @staticmethod
+    def mailbox_count(user: User) -> int:
+        return Mailbox.filter_by(user_id=user.id).order_by(Mailbox.id.desc()).count()
+
+    @staticmethod
+    def alias_mailboxes(alias: Alias) -> list[Mailbox]:
+        return (
+            Session.query(Mailbox)
+            .filter(Mailbox.id == Alias.mailbox_id, Alias.id == alias.id)
+            .union(
+                Session.query(Mailbox)
+                .join(AliasMailbox, Mailbox.id == AliasMailbox.mailbox_id)
+                .filter(AliasMailbox.alias_id == alias.id)
+            )
+            .order_by(Mailbox.id)
+            .limit(10)
+            .all()
+        )
+
+    @staticmethod
+    def alias_mailbox_count(alias: Alias) -> int:
+        return len(alias.mailboxes)
+
+    @staticmethod
+    def alias_list(user: User) -> list[Alias]:
+        return (
+            Alias.filter_by(user_id=user.id).order_by(Alias.id.desc()).limit(10).all()
+        )
+
+    @staticmethod
+    def alias_count(user: User) -> int:
+        return Alias.filter_by(user_id=user.id).count()
+
+    @staticmethod
+    def partner_user(user: User) -> Optional[PartnerUser]:
+        return PartnerUser.get_by(user_id=user.id)
+
+
+class EmailSearchAdmin(BaseView):
+    def is_accessible(self):
+        return current_user.is_authenticated and current_user.is_admin
+
+    def inaccessible_callback(self, name, **kwargs):
+        # redirect to login page if user doesn't have access
+        flash("You don't have access to the admin page", "error")
+        return redirect(url_for("dashboard.index", next=request.url))
+
+    @expose("/", methods=["GET", "POST"])
+    def index(self):
+        search = EmailSearchResult()
+        email = request.args.get("email")
+        if email is not None and len(email) > 0:
+            email = email.strip()
+            search = EmailSearchResult.from_request_email(email)
+
+        return self.render(
+            "admin/email_search.html",
+            email=email,
+            data=search,
+            helper=EmailSearchHelpers,
+        )
+
+
+class CustomDomainWithValidationData:
+    def __init__(self, domain: CustomDomain):
+        self.domain: CustomDomain = domain
+        self.ownership_expected: Optional[ExpectedValidationRecords] = None
+        self.ownership_validation: Optional[DomainValidationResult] = None
+        self.mx_expected: Optional[dict[int, ExpectedValidationRecords]] = None
+        self.mx_validation: Optional[DomainValidationResult] = None
+        self.spf_expected: Optional[ExpectedValidationRecords] = None
+        self.spf_validation: Optional[DomainValidationResult] = None
+        self.dkim_expected: {str: ExpectedValidationRecords} = {}
+        self.dkim_validation: {str: str} = {}
+
+
+class CustomDomainSearchResult:
+    def __init__(self):
+        self.no_match: bool = False
+        self.user: Optional[User] = None
+        self.domains: list[CustomDomainWithValidationData] = []
+
+    @staticmethod
+    def from_user(user: Optional[User]) -> CustomDomainSearchResult:
+        out = CustomDomainSearchResult()
+        if user is None:
+            out.no_match = True
+            return out
+        out.user = user
+        dns_client = get_network_dns_client()
+        validator = CustomDomainValidation(
+            dkim_domain=config.EMAIL_DOMAIN,
+            partner_domains=config.PARTNER_DNS_CUSTOM_DOMAINS,
+            partner_domains_validation_prefixes=config.PARTNER_CUSTOM_DOMAIN_VALIDATION_PREFIXES,
+            dns_client=dns_client,
+        )
+        for custom_domain in user.custom_domains:
+            validation_data = CustomDomainWithValidationData(custom_domain)
+            if not custom_domain.ownership_verified:
+                validation_data.ownership_expected = (
+                    validator.get_ownership_verification_record(custom_domain)
+                )
+                validation_data.ownership_validation = (
+                    validator.validate_domain_ownership(custom_domain)
+                )
+            if not custom_domain.verified:
+                validation_data.mx_expected = validator.get_expected_mx_records(
+                    custom_domain
+                )
+                validation_data.mx_validation = validator.validate_mx_records(
+                    custom_domain
+                )
+            if not custom_domain.spf_verified:
+                validation_data.spf_expected = validator.get_expected_spf_record(
+                    custom_domain
+                )
+                validation_data.spf_validation = validator.validate_spf_records(
+                    custom_domain
+                )
+            if not custom_domain.dkim_verified:
+                validation_data.dkim_expected = validator.get_dkim_records(
+                    custom_domain
+                )
+                validation_data.dkim_validation = validator.validate_dkim_records(
+                    custom_domain
+                )
+            out.domains.append(validation_data)
+
+        return out
+
+
+class CustomDomainSearchAdmin(BaseView):
+    def is_accessible(self):
+        return current_user.is_authenticated and current_user.is_admin
+
+    def inaccessible_callback(self, name, **kwargs):
+        # redirect to login page if user doesn't have access
+        flash("You don't have access to the admin page", "error")
+        return redirect(url_for("dashboard.index", next=request.url))
+
+    @expose("/", methods=["GET", "POST"])
+    def index(self):
+        query = request.args.get("user")
+        if query is None:
+            search = CustomDomainSearchResult()
+        else:
+            try:
+                user_id = int(query)
+                user = User.get_by(id=user_id)
+            except ValueError:
+                user = User.get_by(email=query)
+                if user is None:
+                    cd = CustomDomain.get_by(domain=query)
+                    if cd is not None:
+                        user = cd.user
+            search = CustomDomainSearchResult.from_user(user)
+
+        return self.render(
+            "admin/custom_domain_search.html",
+            data=search,
+            query=query,
+        )

app/app/alias_audit_log_utils.py

@@ -0,0 +1,38 @@
+from enum import Enum
+from typing import Optional
+
+from app.models import Alias, AliasAuditLog
+
+
+class AliasAuditLogAction(Enum):
+    CreateAlias = "create"
+    ChangeAliasStatus = "change_status"
+    DeleteAlias = "delete"
+    UpdateAlias = "update"
+
+    InitiateTransferAlias = "initiate_transfer_alias"
+    AcceptTransferAlias = "accept_transfer_alias"
+    TransferredAlias = "transferred_alias"
+
+    ChangedMailboxes = "changed_mailboxes"
+
+    CreateContact = "create_contact"
+    UpdateContact = "update_contact"
+    DeleteContact = "delete_contact"
+
+
+def emit_alias_audit_log(
+    alias: Alias,
+    action: AliasAuditLogAction,
+    message: str,
+    user_id: Optional[int] = None,
+    commit: bool = False,
+):
+    AliasAuditLog.create(
+        user_id=user_id or alias.user_id,
+        alias_id=alias.id,
+        alias_email=alias.email,
+        action=action.value,
+        message=message,
+        commit=commit,
+    )

app/app/alias_mailbox_utils.py

@@ -0,0 +1,62 @@
+from dataclasses import dataclass
+from enum import Enum
+from typing import List, Optional
+
+from app.alias_audit_log_utils import emit_alias_audit_log, AliasAuditLogAction
+from app.db import Session
+from app.models import Alias, AliasMailbox, Mailbox
+
+_MAX_MAILBOXES_PER_ALIAS = 20
+
+
+class CannotSetMailboxesForAliasCause(Enum):
+    Forbidden = "Forbidden"
+    EmptyMailboxes = "Must choose at least one mailbox"
+    TooManyMailboxes = "Too many mailboxes"
+
+
+@dataclass
+class SetMailboxesForAliasResult:
+    performed_change: bool
+    reason: Optional[CannotSetMailboxesForAliasCause]
+
+
+def set_mailboxes_for_alias(
+    user_id: int, alias: Alias, mailbox_ids: List[int]
+) -> Optional[CannotSetMailboxesForAliasCause]:
+    if len(mailbox_ids) == 0:
+        return CannotSetMailboxesForAliasCause.EmptyMailboxes
+    if len(mailbox_ids) > _MAX_MAILBOXES_PER_ALIAS:
+        return CannotSetMailboxesForAliasCause.TooManyMailboxes
+
+    mailboxes = (
+        Session.query(Mailbox)
+        .filter(
+            Mailbox.id.in_(mailbox_ids),
+            Mailbox.user_id == user_id,
+            Mailbox.verified == True,  # noqa: E712
+        )
+        .order_by(Mailbox.id.asc())
+        .all()
+    )
+    if len(mailboxes) != len(mailbox_ids):
+        return CannotSetMailboxesForAliasCause.Forbidden
+
+    # first remove all existing alias-mailboxes links
+    AliasMailbox.filter_by(alias_id=alias.id).delete()
+    Session.flush()
+
+    # then add all new mailboxes, being the first the one associated with the alias
+    for i, mailbox in enumerate(mailboxes):
+        if i == 0:
+            alias.mailbox_id = mailboxes[0].id
+        else:
+            AliasMailbox.create(alias_id=alias.id, mailbox_id=mailbox.id)
+
+    emit_alias_audit_log(
+        alias=alias,
+        action=AliasAuditLogAction.ChangedMailboxes,
+        message=",".join([f"{mailbox.id} ({mailbox.email})" for mailbox in mailboxes]),
+    )
+
+    return None

app/app/alias_suffix.py

@@ -58,32 +58,34 @@ def verify_prefix_suffix(
 
     # alias_domain must be either one of user custom domains or built-in domains
     if alias_domain not in user.available_alias_domains(alias_options=alias_options):
-        LOG.e("wrong alias suffix %s, user %s", alias_suffix, user)
+        LOG.i("wrong alias suffix %s, user %s", alias_suffix, user)
         return False
 
     # SimpleLogin domain case:
     # 1) alias_suffix must start with "." and
     # 2) alias_domain_prefix must come from the word list
+    available_sl_domains = [
+        sl_domain.domain
+        for sl_domain in user.get_sl_domains(alias_options=alias_options)
+    ]
     if (
-        alias_domain in user.available_sl_domains(alias_options=alias_options)
+        alias_domain in available_sl_domains
         and alias_domain not in user_custom_domains
         # when DISABLE_ALIAS_SUFFIX is true, alias_domain_prefix is empty
         and not config.DISABLE_ALIAS_SUFFIX
     ):
         if not alias_domain_prefix.startswith("."):
-            LOG.e("User %s submits a wrong alias suffix %s", user, alias_suffix)
+            LOG.i("User %s submits a wrong alias suffix %s", user, alias_suffix)
             return False
 
     else:
         if alias_domain not in user_custom_domains:
             if not config.DISABLE_ALIAS_SUFFIX:
-                LOG.e("wrong alias suffix %s, user %s", alias_suffix, user)
+                LOG.i("wrong alias suffix %s, user %s", alias_suffix, user)
                 return False
 
-            if alias_domain not in user.available_sl_domains(
-                alias_options=alias_options
-            ):
-                LOG.e("wrong alias suffix %s, user %s", alias_suffix, user)
+            if alias_domain not in available_sl_domains:
+                LOG.i("wrong alias suffix %s, user %s", alias_suffix, user)
                 return False
 
     return True

app/app/alias_utils.py

@@ -1,12 +1,14 @@
 import csv
 from io import StringIO
 import re
+from dataclasses import dataclass
 from typing import Optional, Tuple
 
 from email_validator import validate_email, EmailNotValidError
 from sqlalchemy.exc import IntegrityError, DataError
 from flask import make_response
 
+from app.alias_audit_log_utils import AliasAuditLogAction, emit_alias_audit_log
 from app.config import (
     BOUNCE_PREFIX_FOR_REPLY_PHASE,
     BOUNCE_PREFIX,
@@ -23,11 +25,20 @@ from app.email_utils import (
     send_cannot_create_domain_alias,
     send_email,
     render,
+    sl_formataddr,
 )
 from app.errors import AliasInTrashError
+from app.events.event_dispatcher import EventDispatcher
+from app.events.generated.event_pb2 import (
+    AliasDeleted,
+    AliasStatusChanged,
+    EventContent,
+    AliasCreated,
+)
 from app.log import LOG
 from app.models import (
     Alias,
+    AliasDeleteReason,
     CustomDomain,
     Directory,
     User,
@@ -56,12 +67,16 @@ def get_user_if_alias_would_auto_create(
         # Prevent addresses with unicode characters (🤯) in them for now.
         validate_email(address, check_deliverability=False, allow_smtputf8=False)
     except EmailNotValidError:
+        LOG.i(f"Not creating alias for {address} because email is invalid")
         return None
 
     domain_and_rule = check_if_alias_can_be_auto_created_for_custom_domain(
         address, notify_user=notify_user
     )
     if DomainDeletedAlias.get_by(email=address):
+        LOG.i(
+            f"Not creating alias for {address} because it was previously deleted for this domain"
+        )
         return None
     if domain_and_rule:
         return domain_and_rule[0].user
@@ -86,6 +101,9 @@ def check_if_alias_can_be_auto_created_for_custom_domain(
     custom_domain: CustomDomain = CustomDomain.get_by(domain=alias_domain)
 
     if not custom_domain:
+        LOG.i(
+            f"Cannot auto-create custom domain alias for {address} because there's no custom domain for {alias_domain}"
+        )
         return None
 
     user: User = custom_domain.user
@@ -101,6 +119,9 @@ def check_if_alias_can_be_auto_created_for_custom_domain(
 
     if not custom_domain.catch_all:
         if len(custom_domain.auto_create_rules) == 0:
+            LOG.i(
+                f"Cannot create alias {address} for domain {custom_domain} because it has no catch-all and no rules"
+            )
             return None
         local = get_email_local_part(address)
 
@@ -114,7 +135,7 @@ def check_if_alias_can_be_auto_created_for_custom_domain(
                 )
                 return custom_domain, rule
         else:  # no rule passes
-            LOG.d("no rule passed to create %s", local)
+            LOG.d(f"No rule matches auto-create {address} for domain {custom_domain}")
             return None
     LOG.d("Create alias via catchall")
 
@@ -141,6 +162,7 @@ def check_if_alias_can_be_auto_created_for_a_directory(
         sep = "#"
     else:
         # if there's no directory separator in the alias, no way to auto-create it
+        LOG.info(f"Cannot auto-create {address} since it has no directory separator")
         return None
 
     directory_name = address[: address.find(sep)]
@@ -148,6 +170,9 @@ def check_if_alias_can_be_auto_created_for_a_directory(
 
     directory = Directory.get_by(name=directory_name)
     if not directory:
+        LOG.info(
+            f"Cannot auto-create {address} because there is no directory for {directory_name}"
+        )
         return None
 
     user: User = directory.user
@@ -156,12 +181,17 @@ def check_if_alias_can_be_auto_created_for_a_directory(
         return None
 
     if not user.can_create_new_alias():
-        LOG.d(f"{user} can't create new directory alias {address}")
+        LOG.d(
+            f"{user} can't create new directory alias {address} because user cannot create aliases"
+        )
         if notify_user:
             send_cannot_create_directory_alias(user, address, directory_name)
         return None
 
     if directory.disabled:
+        LOG.d(
+            f"{user} can't create new directory alias {address} bcause directory is disabled"
+        )
         if notify_user:
             send_cannot_create_directory_alias_disabled(user, address, directory_name)
         return None
@@ -303,36 +333,56 @@ def try_auto_create_via_domain(address: str) -> Optional[Alias]:
         return None
 
 
-def delete_alias(alias: Alias, user: User):
+def delete_alias(
+    alias: Alias,
+    user: User,
+    reason: AliasDeleteReason = AliasDeleteReason.Unspecified,
+    commit: bool = False,
+):
     """
     Delete an alias and add it to either global or domain trash
     Should be used instead of Alias.delete, DomainDeletedAlias.create, DeletedAlias.create
     """
-    # save deleted alias to either global or domain trash
+    LOG.i(f"User {user} has deleted alias {alias}")
+    # save deleted alias to either global or domain tra
     if alias.custom_domain_id:
         if not DomainDeletedAlias.get_by(
             email=alias.email, domain_id=alias.custom_domain_id
         ):
-            LOG.d("add %s to domain %s trash", alias, alias.custom_domain_id)
-            Session.add(
-                DomainDeletedAlias(
-                    user_id=user.id,
-                    email=alias.email,
-                    domain_id=alias.custom_domain_id,
-                )
+            domain_deleted_alias = DomainDeletedAlias(
+                user_id=user.id,
+                email=alias.email,
+                domain_id=alias.custom_domain_id,
+                reason=reason,
             )
+            Session.add(domain_deleted_alias)
             Session.commit()
-
+            LOG.i(
+                f"Moving {alias} to domain {alias.custom_domain_id} trash {domain_deleted_alias}"
+            )
     else:
         if not DeletedAlias.get_by(email=alias.email):
-            LOG.d("add %s to global trash", alias)
-            Session.add(DeletedAlias(email=alias.email))
+            deleted_alias = DeletedAlias(email=alias.email, reason=reason)
+            Session.add(deleted_alias)
             Session.commit()
+            LOG.i(f"Moving {alias} to global trash {deleted_alias}")
 
-    LOG.i("delete alias %s", alias)
+    alias_id = alias.id
+    alias_email = alias.email
+
+    emit_alias_audit_log(
+        alias, AliasAuditLogAction.DeleteAlias, "Alias deleted by user action"
+    )
     Alias.filter(Alias.id == alias.id).delete()
     Session.commit()
 
+    EventDispatcher.send_event(
+        user,
+        EventContent(alias_deleted=AliasDeleted(id=alias_id, email=alias_email)),
+    )
+    if commit:
+        Session.commit()
+
 
 def aliases_for_mailbox(mailbox: Mailbox) -> [Alias]:
     """
@@ -405,7 +455,7 @@ def alias_export_csv(user, csv_direct_export=False):
     return output
 
 
-def transfer_alias(alias, new_user, new_mailboxes: [Mailbox]):
+def transfer_alias(alias: Alias, new_user: User, new_mailboxes: [Mailbox]):
     # cannot transfer alias which is used for receiving newsletter
     if User.get_by(newsletter_alias_id=alias.id):
         raise Exception("Cannot transfer alias that's used to receive newsletter")
@@ -442,10 +492,12 @@ def transfer_alias(alias, new_user, new_mailboxes: [Mailbox]):
         f"Alias {alias.email} has been received",
         render(
             "transactional/alias-transferred.txt",
+            user=old_user,
             alias=alias,
         ),
         render(
             "transactional/alias-transferred.html",
+            user=old_user,
             alias=alias,
         ),
     )
@@ -457,4 +509,90 @@ def transfer_alias(alias, new_user, new_mailboxes: [Mailbox]):
     alias.disable_pgp = False
     alias.pinned = False
 
+    emit_alias_audit_log(
+        alias=alias,
+        action=AliasAuditLogAction.TransferredAlias,
+        message=f"Lost ownership of alias due to alias transfer confirmed. New owner is {new_user.id}",
+        user_id=old_user.id,
+    )
+    EventDispatcher.send_event(
+        old_user,
+        EventContent(
+            alias_deleted=AliasDeleted(
+                id=alias.id,
+                email=alias.email,
+            )
+        ),
+    )
+
+    emit_alias_audit_log(
+        alias=alias,
+        action=AliasAuditLogAction.AcceptTransferAlias,
+        message=f"Accepted alias transfer from user {old_user.id}",
+        user_id=new_user.id,
+    )
+    EventDispatcher.send_event(
+        new_user,
+        EventContent(
+            alias_created=AliasCreated(
+                id=alias.id,
+                email=alias.email,
+                note=alias.note,
+                enabled=alias.enabled,
+                created_at=int(alias.created_at.timestamp),
+            )
+        ),
+    )
+
     Session.commit()
+
+
+def change_alias_status(
+    alias: Alias, enabled: bool, message: Optional[str] = None, commit: bool = False
+):
+    LOG.i(f"Changing alias {alias} enabled to {enabled}")
+    alias.enabled = enabled
+
+    event = AliasStatusChanged(
+        id=alias.id,
+        email=alias.email,
+        enabled=enabled,
+        created_at=int(alias.created_at.timestamp),
+    )
+    EventDispatcher.send_event(alias.user, EventContent(alias_status_change=event))
+    audit_log_message = f"Set alias status to {enabled}"
+    if message is not None:
+        audit_log_message += f". {message}"
+    emit_alias_audit_log(
+        alias, AliasAuditLogAction.ChangeAliasStatus, audit_log_message
+    )
+
+    if commit:
+        Session.commit()
+
+
+@dataclass
+class AliasRecipientName:
+    name: str
+    message: Optional[str] = None
+
+
+def get_alias_recipient_name(alias: Alias) -> AliasRecipientName:
+    """
+    Logic:
+    1. If alias has name, use it
+    2. If alias has custom domain, and custom domain has name, use it
+    3. Otherwise, use the alias email as the recipient
+    """
+    if alias.name:
+        return AliasRecipientName(
+            name=sl_formataddr((alias.name, alias.email)),
+            message=f"Put alias name {alias.name} in from header",
+        )
+    elif alias.custom_domain:
+        if alias.custom_domain.name:
+            return AliasRecipientName(
+                name=sl_formataddr((alias.custom_domain.name, alias.email)),
+                message=f"Put domain default alias name {alias.custom_domain.name} in from header",
+            )
+    return AliasRecipientName(name=alias.email)

app/app/api/base.py

@@ -19,6 +19,9 @@ def authorize_request() -> Optional[Tuple[str, int]]:
 
     if not api_key:
         if current_user.is_authenticated:
+            # if current_user.is_authenticated and request.headers.get(
+            #    constants.HEADER_ALLOW_API_COOKIES
+            # ):
             g.user = current_user
         else:
             return jsonify(error="Wrong api key"), 401

app/app/api/serializer.py

@@ -191,15 +191,8 @@ def get_alias_infos_with_pagination_v3(
         q = q.order_by(Alias.email.desc())
     else:
         # default sorting
-        latest_activity = case(
-            [
-                (Alias.created_at > EmailLog.created_at, Alias.created_at),
-                (Alias.created_at < EmailLog.created_at, EmailLog.created_at),
-            ],
-            else_=Alias.created_at,
-        )
         q = q.order_by(Alias.pinned.desc())
-        q = q.order_by(latest_activity.desc())
+        q = q.order_by(func.greatest(Alias.created_at, EmailLog.created_at).desc())
 
     q = q.limit(page_limit).offset(page_id * page_size)
 

app/app/api/views/alias.py

@@ -1,9 +1,13 @@
+from typing import Optional
+
 from deprecated import deprecated
 from flask import g
 from flask import jsonify
 from flask import request
 
 from app import alias_utils
+from app.alias_audit_log_utils import emit_alias_audit_log, AliasAuditLogAction
+from app.alias_mailbox_utils import set_mailboxes_for_alias
 from app.api.base import api_bp, require_api_auth
 from app.api.serializer import (
     AliasInfo,
@@ -25,7 +29,8 @@ from app.errors import (
     ErrAddressInvalid,
 )
 from app.extensions import limiter
-from app.models import Alias, Contact, Mailbox, AliasMailbox
+from app.log import LOG
+from app.models import Alias, Contact, Mailbox, AliasDeleteReason
 
 
 @deprecated
@@ -160,7 +165,7 @@ def delete_alias(alias_id):
     if not alias or alias.user_id != user.id:
         return jsonify(error="Forbidden"), 403
 
-    alias_utils.delete_alias(alias, user)
+    alias_utils.delete_alias(alias, user, AliasDeleteReason.ManualAction)
 
     return jsonify(deleted=True), 200
 
@@ -184,7 +189,12 @@ def toggle_alias(alias_id):
     if not alias or alias.user_id != user.id:
         return jsonify(error="Forbidden"), 403
 
-    alias.enabled = not alias.enabled
+    alias_utils.change_alias_status(
+        alias,
+        enabled=not alias.enabled,
+        message=f"Set enabled={not alias.enabled} via API",
+    )
+    LOG.i(f"User {user} changed alias {alias} enabled status to {alias.enabled}")
     Session.commit()
 
     return jsonify(enabled=alias.enabled), 200
@@ -270,10 +280,12 @@ def update_alias(alias_id):
     if not alias or alias.user_id != user.id:
         return jsonify(error="Forbidden"), 403
 
+    changed_fields = []
     changed = False
     if "note" in data:
         new_note = data.get("note")
         alias.note = new_note
+        changed_fields.append("note")
         changed = True
 
     if "mailbox_id" in data:
@@ -283,35 +295,22 @@ def update_alias(alias_id):
             return jsonify(error="Forbidden"), 400
 
         alias.mailbox_id = mailbox_id
+        changed_fields.append(f"mailbox_id ({mailbox_id})")
         changed = True
 
     if "mailbox_ids" in data:
-        mailbox_ids = [int(m_id) for m_id in data.get("mailbox_ids")]
-        mailboxes: [Mailbox] = []
-
-        # check if all mailboxes belong to user
-        for mailbox_id in mailbox_ids:
-            mailbox = Mailbox.get(mailbox_id)
-            if not mailbox or mailbox.user_id != user.id or not mailbox.verified:
-                return jsonify(error="Forbidden"), 400
-            mailboxes.append(mailbox)
-
-        if not mailboxes:
-            return jsonify(error="Must choose at least one mailbox"), 400
-
-        # <<< update alias mailboxes >>>
-        # first remove all existing alias-mailboxes links
-        AliasMailbox.filter_by(alias_id=alias.id).delete()
-        Session.flush()
-
-        # then add all new mailboxes
-        for i, mailbox in enumerate(mailboxes):
-            if i == 0:
-                alias.mailbox_id = mailboxes[0].id
-            else:
-                AliasMailbox.create(alias_id=alias.id, mailbox_id=mailbox.id)
-        # <<< END update alias mailboxes >>>
+        try:
+            mailbox_ids = [int(m_id) for m_id in data.get("mailbox_ids")]
+        except ValueError:
+            return jsonify(error="Invalid mailbox_id"), 400
+        err = set_mailboxes_for_alias(
+            user_id=user.id, alias=alias, mailbox_ids=mailbox_ids
+        )
+        if err:
+            return jsonify(error=err.value), 400
 
+        mailbox_ids_string = ",".join(map(str, mailbox_ids))
+        changed_fields.append(f"mailbox_ids ({mailbox_ids_string})")
         changed = True
 
     if "name" in data:
@@ -323,17 +322,26 @@ def update_alias(alias_id):
         if new_name:
             new_name = new_name.replace("\n", "")
         alias.name = new_name
+        changed_fields.append("name")
         changed = True
 
     if "disable_pgp" in data:
         alias.disable_pgp = data.get("disable_pgp")
+        changed_fields.append("disable_pgp")
         changed = True
 
     if "pinned" in data:
         alias.pinned = data.get("pinned")
+        changed_fields.append("pinned")
         changed = True
 
     if changed:
+        changed_fields_string = ",".join(changed_fields)
+        emit_alias_audit_log(
+            alias,
+            AliasAuditLogAction.UpdateAlias,
+            f"Alias fields updated ({changed_fields_string})",
+        )
         Session.commit()
 
     return jsonify(ok=True), 200
@@ -414,15 +422,14 @@ def create_contact_route(alias_id):
     if not data:
         return jsonify(error="request body cannot be empty"), 400
 
-    alias: Alias = Alias.get(alias_id)
-
-    if alias.user_id != g.user.id:
+    alias: Optional[Alias] = Alias.get_by(id=alias_id, user_id=g.user.id)
+    if not alias:
         return jsonify(error="Forbidden"), 403
 
     contact_address = data.get("contact")
 
     try:
-        contact = create_contact(g.user, alias, contact_address)
+        contact = create_contact(alias, contact_address)
     except ErrContactErrorUpgradeNeeded as err:
         return jsonify(error=err.error_for_user()), 403
     except (ErrAddressInvalid, CannotCreateContactForReverseAlias) as err:
@@ -444,11 +451,16 @@ def delete_contact(contact_id):
         200
     """
     user = g.user
-    contact = Contact.get(contact_id)
+    contact: Optional[Contact] = Contact.get(contact_id)
 
     if not contact or contact.alias.user_id != user.id:
         return jsonify(error="Forbidden"), 403
 
+    emit_alias_audit_log(
+        alias=contact.alias,
+        action=AliasAuditLogAction.DeleteContact,
+        message=f"Deleted contact {contact_id} ({contact.email})",
+    )
     Contact.delete(contact_id)
     Session.commit()
 
@@ -466,12 +478,17 @@ def toggle_contact(contact_id):
         200
     """
     user = g.user
-    contact = Contact.get(contact_id)
+    contact: Optional[Contact] = Contact.get(contact_id)
 
     if not contact or contact.alias.user_id != user.id:
         return jsonify(error="Forbidden"), 403
 
     contact.block_forward = not contact.block_forward
+    emit_alias_audit_log(
+        alias=contact.alias,
+        action=AliasAuditLogAction.UpdateContact,
+        message=f"Set contact state {contact.id} {contact.email} -> {contact.website_email} to blocked {contact.block_forward}",
+    )
     Session.commit()
 
     return jsonify(block_forward=contact.block_forward), 200

app/app/api/views/auth.py

@@ -23,6 +23,7 @@ from app.events.auth_event import LoginEvent, RegisterEvent
 from app.extensions import limiter
 from app.log import LOG
 from app.models import User, ApiKey, SocialAuth, AccountActivation
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 from app.utils import sanitize_email, canonicalize_email
 
 
@@ -52,8 +53,12 @@ def auth_login():
     password = data.get("password")
     device = data.get("device")
 
-    email = sanitize_email(data.get("email"))
-    canonical_email = canonicalize_email(data.get("email"))
+    email = data.get("email")
+    if not email:
+        LoginEvent(LoginEvent.ActionType.failed, LoginEvent.Source.api).send()
+        return jsonify(error="Email or password incorrect"), 400
+    email = sanitize_email(email)
+    canonical_email = canonicalize_email(email)
 
     user = User.get_by(email=email) or User.get_by(email=canonical_email)
 
@@ -129,8 +134,8 @@ def auth_register():
     send_email(
         email,
         "Just one more step to join SimpleLogin",
-        render("transactional/code-activation.txt.jinja2", code=code),
-        render("transactional/code-activation.html", code=code),
+        render("transactional/code-activation.txt.jinja2", user=user, code=code),
+        render("transactional/code-activation.html", user=user, code=code),
     )
 
     RegisterEvent(RegisterEvent.ActionType.success, RegisterEvent.Source.api).send()
@@ -183,6 +188,11 @@ def auth_activate():
 
     LOG.d("activate user %s", user)
     user.activated = True
+    emit_user_audit_log(
+        user=user,
+        action=UserAuditLogAction.ActivateUser,
+        message=f"User has been activated: {user.email}",
+    )
     AccountActivation.delete(account_activation.id)
     Session.commit()
 
@@ -226,8 +236,8 @@ def auth_reactivate():
     send_email(
         email,
         "Just one more step to join SimpleLogin",
-        render("transactional/code-activation.txt.jinja2", code=code),
-        render("transactional/code-activation.html", code=code),
+        render("transactional/code-activation.txt.jinja2", user=user, code=code),
+        render("transactional/code-activation.html", user=user, code=code),
     )
 
     return jsonify(msg="User needs to confirm their account"), 200

app/app/api/views/custom_domain.py

@@ -2,8 +2,10 @@ from flask import g, request
 from flask import jsonify
 
 from app.api.base import api_bp, require_api_auth
+from app.custom_domain_utils import set_custom_domain_mailboxes
 from app.db import Session
-from app.models import CustomDomain, DomainDeletedAlias, Mailbox, DomainMailbox
+from app.log import LOG
+from app.models import CustomDomain, DomainDeletedAlias
 
 
 def custom_domain_to_dict(custom_domain: CustomDomain):
@@ -100,23 +102,14 @@ def update_custom_domain(custom_domain_id):
 
     if "mailbox_ids" in data:
         mailbox_ids = [int(m_id) for m_id in data.get("mailbox_ids")]
-        if mailbox_ids:
-            # check if mailbox is not tempered with
-            mailboxes = []
-            for mailbox_id in mailbox_ids:
-                mailbox = Mailbox.get(mailbox_id)
-                if not mailbox or mailbox.user_id != user.id or not mailbox.verified:
-                    return jsonify(error="Forbidden"), 400
-                mailboxes.append(mailbox)
-
-            # first remove all existing domain-mailboxes links
-            DomainMailbox.filter_by(domain_id=custom_domain.id).delete()
-            Session.flush()
-
-            for mailbox in mailboxes:
-                DomainMailbox.create(domain_id=custom_domain.id, mailbox_id=mailbox.id)
-
+        result = set_custom_domain_mailboxes(user.id, custom_domain, mailbox_ids)
+        if result.success:
             changed = True
+        else:
+            LOG.info(
+                f"Prevented from updating mailboxes [custom_domain_id={custom_domain.id}]: {result.reason.value}"
+            )
+            return jsonify(error="Forbidden"), 400
 
     if changed:
         Session.commit()

app/app/api/views/mailbox.py

@@ -1,22 +1,13 @@
 from smtplib import SMTPRecipientsRefused
 
-import arrow
 from flask import g
 from flask import jsonify
 from flask import request
 
+from app import mailbox_utils
 from app.api.base import api_bp, require_api_auth
-from app.config import JOB_DELETE_MAILBOX
-from app.dashboard.views.mailbox import send_verification_email
-from app.dashboard.views.mailbox_detail import verify_mailbox_change
 from app.db import Session
-from app.email_utils import (
-    mailbox_already_used,
-    email_can_be_used_as_mailbox,
-)
-from app.email_validation import is_valid_email
-from app.log import LOG
-from app.models import Mailbox, Job
+from app.models import Mailbox
 from app.utils import sanitize_email
 
 
@@ -42,33 +33,21 @@ def create_mailbox():
         the new mailbox dict
     """
     user = g.user
-    mailbox_email = sanitize_email(request.get_json().get("email"))
+    email = request.get_json().get("email")
+    if not email:
+        return jsonify(error="Invalid email"), 400
 
-    if not user.is_premium():
-        return jsonify(error="Only premium plan can add additional mailbox"), 400
+    mailbox_email = sanitize_email(email)
 
-    if not is_valid_email(mailbox_email):
-        return jsonify(error=f"{mailbox_email} invalid"), 400
-    elif mailbox_already_used(mailbox_email, user):
-        return jsonify(error=f"{mailbox_email} already used"), 400
-    elif not email_can_be_used_as_mailbox(mailbox_email):
-        return (
-            jsonify(
-                error=f"{mailbox_email} cannot be used. Please note a mailbox cannot "
-                f"be a disposable email address"
-            ),
-            400,
-        )
-    else:
-        new_mailbox = Mailbox.create(email=mailbox_email, user_id=user.id)
-        Session.commit()
+    try:
+        new_mailbox = mailbox_utils.create_mailbox(user, mailbox_email).mailbox
+    except mailbox_utils.MailboxError as e:
+        return jsonify(error=e.msg), 400
 
-        send_verification_email(user, new_mailbox)
-
-        return (
-            jsonify(mailbox_to_dict(new_mailbox)),
-            201,
-        )
+    return (
+        jsonify(mailbox_to_dict(new_mailbox)),
+        201,
+    )
 
 
 @api_bp.route("/mailboxes/<int:mailbox_id>", methods=["DELETE"])
@@ -86,47 +65,17 @@ def delete_mailbox(mailbox_id):
 
     """
     user = g.user
-    mailbox = Mailbox.get(mailbox_id)
-
-    if not mailbox or mailbox.user_id != user.id:
-        return jsonify(error="Forbidden"), 403
-
-    if mailbox.id == user.default_mailbox_id:
-        return jsonify(error="You cannot delete the default mailbox"), 400
-
     data = request.get_json() or {}
     transfer_mailbox_id = data.get("transfer_aliases_to")
     if transfer_mailbox_id and int(transfer_mailbox_id) >= 0:
-        transfer_mailbox = Mailbox.get(transfer_mailbox_id)
+        transfer_mailbox_id = int(transfer_mailbox_id)
+    else:
+        transfer_mailbox_id = None
 
-        if not transfer_mailbox or transfer_mailbox.user_id != user.id:
-            return (
-                jsonify(error="You must transfer the aliases to a mailbox you own."),
-                403,
-            )
-
-        if transfer_mailbox_id == mailbox_id:
-            return (
-                jsonify(
-                    error="You can not transfer the aliases to the mailbox you want to delete."
-                ),
-                400,
-            )
-
-        if not transfer_mailbox.verified:
-            return jsonify(error="Your new mailbox is not verified"), 400
-
-    # Schedule delete account job
-    LOG.w("schedule delete mailbox job for %s", mailbox)
-    Job.create(
-        name=JOB_DELETE_MAILBOX,
-        payload={
-            "mailbox_id": mailbox.id,
-            "transfer_mailbox_id": transfer_mailbox_id,
-        },
-        run_at=arrow.now(),
-        commit=True,
-    )
+    try:
+        mailbox_utils.delete_mailbox(user, mailbox_id, transfer_mailbox_id)
+    except mailbox_utils.MailboxError as e:
+        return jsonify(error=e.msg), 400
 
     return jsonify(deleted=True), 200
 
@@ -168,20 +117,10 @@ def update_mailbox(mailbox_id):
 
     if "email" in data:
         new_email = sanitize_email(data.get("email"))
-
-        if mailbox_already_used(new_email, user):
-            return jsonify(error=f"{new_email} already used"), 400
-        elif not email_can_be_used_as_mailbox(new_email):
-            return (
-                jsonify(
-                    error=f"{new_email} cannot be used. Please note a mailbox cannot "
-                    f"be a disposable email address"
-                ),
-                400,
-            )
-
         try:
-            verify_mailbox_change(user, mailbox, new_email)
+            mailbox_utils.request_mailbox_email_change(user, mailbox, new_email)
+        except mailbox_utils.MailboxError as e:
+            return jsonify(error=e.msg), 400
         except SMTPRecipientsRefused:
             return jsonify(error=f"Incorrect mailbox, please recheck {new_email}"), 400
         else:
@@ -191,7 +130,7 @@ def update_mailbox(mailbox_id):
     if "cancel_email_change" in data:
         cancel_email_change = data.get("cancel_email_change")
         if cancel_email_change:
-            mailbox.new_email = None
+            mailbox_utils.cancel_email_change(mailbox.id, user)
             changed = True
 
     if changed:

app/app/api/views/new_custom_alias.py

@@ -1,3 +1,4 @@
+from email_validator import EmailNotValidError
 from flask import g
 from flask import jsonify, request
 
@@ -93,12 +94,15 @@ def new_custom_alias_v2():
             400,
         )
 
-    alias = Alias.create(
-        user_id=user.id,
-        email=full_alias,
-        mailbox_id=user.default_mailbox_id,
-        note=note,
-    )
+    try:
+        alias = Alias.create(
+            user_id=user.id,
+            email=full_alias,
+            mailbox_id=user.default_mailbox_id,
+            note=note,
+        )
+    except EmailNotValidError:
+        return jsonify(error="Email is not valid"), 400
 
     Session.commit()
 
@@ -153,8 +157,17 @@ def new_custom_alias_v3():
     if not isinstance(data, dict):
         return jsonify(error="request body does not follow the required format"), 400
 
-    alias_prefix = data.get("alias_prefix", "").strip().lower().replace(" ", "")
+    alias_prefix_data = data.get("alias_prefix", "") or ""
+
+    if not isinstance(alias_prefix_data, str):
+        return jsonify(error="request body does not follow the required format"), 400
+
+    alias_prefix = alias_prefix_data.strip().lower().replace(" ", "")
     signed_suffix = data.get("signed_suffix", "") or ""
+
+    if not isinstance(signed_suffix, str):
+        return jsonify(error="request body does not follow the required format"), 400
+
     signed_suffix = signed_suffix.strip()
 
     mailbox_ids = data.get("mailbox_ids")

app/app/api/views/setting.py

@@ -12,7 +12,7 @@ from app.models import (
     SenderFormatEnum,
     AliasSuffixEnum,
 )
-from app.proton.utils import perform_proton_account_unlink
+from app.proton.proton_unlink import perform_proton_account_unlink
 
 
 def setting_to_dict(user: User):
@@ -144,5 +144,6 @@ def get_available_domains_for_random_alias_v2():
 @require_api_auth
 def unlink_proton_account():
     user = g.user
-    perform_proton_account_unlink(user)
+    if not perform_proton_account_unlink(user):
+        return jsonify(error="The account cannot be unlinked"), 400
     return jsonify({"ok": True})

app/app/api/views/user.py

@@ -6,6 +6,7 @@ from app import config
 from app.extensions import limiter
 from app.log import LOG
 from app.models import Job, ApiToCookieToken
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 
 
 @api_bp.route("/user", methods=["DELETE"])
@@ -16,6 +17,11 @@ def delete_user():
 
     """
     # Schedule delete account job
+    emit_user_audit_log(
+        user=g.user,
+        action=UserAuditLogAction.UserMarkedForDeletion,
+        message=f"Marked user {g.user.id} ({g.user.email}) for deletion from API",
+    )
     LOG.w("schedule delete account job for %s", g.user)
     Job.create(
         name=config.JOB_DELETE_ACCOUNT,

app/app/api/views/user_info.py

@@ -10,8 +10,9 @@ from app.api.base import api_bp, require_api_auth
 from app.config import SESSION_COOKIE_NAME
 from app.dashboard.views.index import get_stats
 from app.db import Session
+from app.image_validation import detect_image_format, ImageFormat
 from app.models import ApiKey, File, PartnerUser, User
-from app.proton.utils import get_proton_partner
+from app.proton.proton_partner import get_proton_partner
 from app.session import logout_session
 from app.utils import random_string
 
@@ -78,17 +79,18 @@ def update_user_info():
     data = request.get_json() or {}
 
     if "profile_picture" in data:
-        if data["profile_picture"] is None:
-            if user.profile_picture_id:
-                file = user.profile_picture
-                user.profile_picture_id = None
+        if user.profile_picture_id:
+            file = user.profile_picture
+            user.profile_picture_id = None
+            Session.flush()
+            if file:
+                File.delete(file.id)
+                s3.delete(file.path)
                 Session.flush()
-                if file:
-                    File.delete(file.id)
-                    s3.delete(file.path)
-                    Session.flush()
-        else:
+        if data["profile_picture"] is not None:
             raw_data = base64.decodebytes(data["profile_picture"].encode())
+            if detect_image_format(raw_data) == ImageFormat.Unknown:
+                return jsonify(error="Unsupported image format"), 400
             file_path = random_string(30)
             file = File.create(user_id=user.id, path=file_path)
             Session.flush()

app/app/auth/views/activate.py

@@ -7,6 +7,7 @@ from app.db import Session
 from app.extensions import limiter
 from app.log import LOG
 from app.models import ActivationCode
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 from app.utils import sanitize_next_url
 
 
@@ -47,6 +48,11 @@ def activate():
 
     user = activation_code.user
     user.activated = True
+    emit_user_audit_log(
+        user=user,
+        action=UserAuditLogAction.ActivateUser,
+        message=f"User has been activated: {user.email}",
+    )
     login_user(user)
 
     # activation code is to be used only once

app/app/auth/views/change_email.py

@@ -3,11 +3,13 @@ from flask_login import login_user
 
 from app.auth.base import auth_bp
 from app.db import Session
+from app.extensions import limiter
 from app.log import LOG
 from app.models import EmailChange, ResetPasswordCode
 
 
 @auth_bp.route("/change_email", methods=["GET", "POST"])
+@limiter.limit("3/hour")
 def change_email():
     code = request.args.get("code")
 

app/app/auth/views/login.py

@@ -10,6 +10,7 @@ from app.events.auth_event import LoginEvent
 from app.extensions import limiter
 from app.log import LOG
 from app.models import User
+from app.pw_models import PasswordOracle
 from app.utils import sanitize_email, sanitize_next_url, canonicalize_email
 
 
@@ -43,6 +44,13 @@ def login():
         user = User.get_by(email=email) or User.get_by(email=canonical_email)
 
         if not user or not user.check_password(form.password.data):
+            if not user:
+                # Do the hash to avoid timing attacks nevertheless
+                dummy_pw = PasswordOracle()
+                dummy_pw.password = (
+                    "$2b$12$ZWqpL73h4rGNfLkJohAFAu0isqSw/bX9p/tzpbWRz/To5FAftaW8u"
+                )
+                dummy_pw.check_password(form.password.data)
             # Trigger rate limiter
             g.deduct_limit = True
             form.password.data = None

app/app/auth/views/oidc.py

@@ -1,14 +1,13 @@
 from flask import request, session, redirect, flash, url_for
 from requests_oauthlib import OAuth2Session
 
+import requests
+
 from app import config
 from app.auth.base import auth_bp
 from app.auth.views.login_utils import after_login
 from app.config import (
     URL,
-    OIDC_AUTHORIZATION_URL,
-    OIDC_USER_INFO_URL,
-    OIDC_TOKEN_URL,
     OIDC_SCOPES,
     OIDC_NAME_FIELD,
 )
@@ -16,14 +15,15 @@ from app.db import Session
 from app.email_utils import send_welcome_email
 from app.log import LOG
 from app.models import User, SocialAuth
-from app.utils import encode_url, sanitize_email, sanitize_next_url
+from app.utils import sanitize_email, sanitize_next_url
 
 
 # need to set explicitly redirect_uri instead of leaving the lib to pre-fill redirect_uri
 # when served behind nginx, the redirect_uri is localhost... and not the real url
-_redirect_uri = URL + "/auth/oidc/callback"
+redirect_uri = URL + "/auth/oidc/callback"
 
 SESSION_STATE_KEY = "oauth_state"
+SESSION_NEXT_KEY = "oauth_redirect_next"
 
 
 @auth_bp.route("/oidc/login")
@@ -32,18 +32,17 @@ def oidc_login():
         return redirect(url_for("auth.login"))
 
     next_url = sanitize_next_url(request.args.get("next"))
-    if next_url:
-        redirect_uri = _redirect_uri + "?next=" + encode_url(next_url)
-    else:
-        redirect_uri = _redirect_uri
+
+    auth_url = requests.get(config.OIDC_WELL_KNOWN_URL).json()["authorization_endpoint"]
 
     oidc = OAuth2Session(
         config.OIDC_CLIENT_ID, scope=[OIDC_SCOPES], redirect_uri=redirect_uri
     )
-    authorization_url, state = oidc.authorization_url(OIDC_AUTHORIZATION_URL)
+    authorization_url, state = oidc.authorization_url(auth_url)
 
     # State is used to prevent CSRF, keep this for later.
     session[SESSION_STATE_KEY] = state
+    session[SESSION_NEXT_KEY] = next_url
     return redirect(authorization_url)
 
 
@@ -60,19 +59,23 @@ def oidc_callback():
         flash("Please use another sign in method then", "warning")
         return redirect("/")
 
+    oidc_configuration = requests.get(config.OIDC_WELL_KNOWN_URL).json()
+    user_info_url = oidc_configuration["userinfo_endpoint"]
+    token_url = oidc_configuration["token_endpoint"]
+
     oidc = OAuth2Session(
         config.OIDC_CLIENT_ID,
         state=session[SESSION_STATE_KEY],
         scope=[OIDC_SCOPES],
-        redirect_uri=_redirect_uri,
+        redirect_uri=redirect_uri,
     )
     oidc.fetch_token(
-        OIDC_TOKEN_URL,
+        token_url,
         client_secret=config.OIDC_CLIENT_SECRET,
         authorization_response=request.url,
     )
 
-    oidc_user_data = oidc.get(OIDC_USER_INFO_URL)
+    oidc_user_data = oidc.get(user_info_url)
     if oidc_user_data.status_code != 200:
         LOG.e(
             f"cannot get oidc user data {oidc_user_data.status_code} {oidc_user_data.text}"
@@ -111,7 +114,8 @@ def oidc_callback():
         Session.commit()
 
     # The activation link contains the original page, for ex authorize page
-    next_url = sanitize_next_url(request.args.get("next")) if request.args else None
+    next_url = session[SESSION_NEXT_KEY]
+    session[SESSION_NEXT_KEY] = None
 
     return after_login(user, next_url)
 

app/app/auth/views/proton.py

@@ -23,7 +23,7 @@ from app.proton.proton_callback_handler import (
     ProtonCallbackHandler,
     Action,
 )
-from app.proton.utils import get_proton_partner
+from app.proton.proton_partner import get_proton_partner
 from app.utils import sanitize_next_url, sanitize_scheme
 
 _authorization_base_url = PROTON_BASE_URL + "/oauth/authorize"

app/app/auth/views/register.py

@@ -115,7 +115,8 @@ def register():
 
 
 def send_activation_email(user, next_url):
-    # the activation code is valid for 1h
+    # the activation code is valid for 1h and delete all previous codes
+    Session.query(ActivationCode).filter(ActivationCode.user_id == user.id).delete()
     activation = ActivationCode.create(user_id=user.id, code=random_string(30))
     Session.commit()
 
@@ -125,4 +126,4 @@ def send_activation_email(user, next_url):
         LOG.d("redirect user to %s after activation", next_url)
         activation_link = activation_link + "&next=" + encode_url(next_url)
 
-    email_utils.send_activation_email(user.email, activation_link)
+    email_utils.send_activation_email(user, activation_link)

app/app/auth/views/reset_password.py

@@ -9,6 +9,7 @@ from app.auth.views.login_utils import after_login
 from app.db import Session
 from app.extensions import limiter
 from app.models import ResetPasswordCode
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 
 
 class ResetPasswordForm(FlaskForm):
@@ -59,6 +60,11 @@ def reset_password():
 
         # this can be served to activate user too
         user.activated = True
+        emit_user_audit_log(
+            user=user,
+            action=UserAuditLogAction.ResetPassword,
+            message="User has reset their password",
+        )
 
         # remove all reset password codes
         ResetPasswordCode.filter_by(user_id=user.id).delete()

app/app/build_info.py

@@ -1,2 +1,3 @@
 SHA1 = "dev"
 BUILD_TIME = "1652365083"
+VERSION = SHA1

app/app/config.py

@@ -3,7 +3,7 @@ import random
 import socket
 import string
 from ast import literal_eval
-from typing import Callable, List
+from typing import Callable, List, Optional
 from urllib.parse import urlparse
 
 from dotenv import load_dotenv
@@ -35,6 +35,44 @@ def sl_getenv(env_var: str, default_factory: Callable = None):
     return literal_eval(value)
 
 
+def get_env_dict(env_var: str) -> dict[str, str]:
+    """
+    Get an env variable and convert it into a python dictionary with keys and values as strings.
+    Args:
+        env_var (str): env var, example: SL_DB
+
+    Syntax is: key1=value1;key2=value2
+    Components separated by ;
+    key and value separated by =
+    """
+    value = os.getenv(env_var)
+    if not value:
+        return {}
+
+    components = value.split(";")
+    result = {}
+    for component in components:
+        if component == "":
+            continue
+        parts = component.split("=")
+        if len(parts) != 2:
+            raise Exception(f"Invalid config for env var {env_var}")
+        result[parts[0].strip()] = parts[1].strip()
+
+    return result
+
+
+def get_env_csv(env_var: str, default: Optional[str]) -> list[str]:
+    """
+    Get an env variable and convert it into a list of strings separated by,
+    Syntax is: val1,val2
+    """
+    value = os.getenv(env_var, default)
+    if not value:
+        return []
+    return [field.strip() for field in value.split(",") if field.strip()]
+
+
 config_file = os.environ.get("CONFIG")
 if config_file:
     config_file = get_abs_path(config_file)
@@ -120,7 +158,7 @@ if POSTFIX_SUBMISSION_TLS:
 else:
     default_postfix_port = 25
 POSTFIX_PORT = int(os.environ.get("POSTFIX_PORT", default_postfix_port))
-POSTFIX_TIMEOUT = os.environ.get("POSTFIX_TIMEOUT", 3)
+POSTFIX_TIMEOUT = int(os.environ.get("POSTFIX_TIMEOUT", 3))
 
 # ["domain1.com", "domain2.com"]
 OTHER_ALIAS_DOMAINS = sl_getenv("OTHER_ALIAS_DOMAINS", list)
@@ -144,6 +182,14 @@ FIRST_ALIAS_DOMAIN = os.environ.get("FIRST_ALIAS_DOMAIN") or EMAIL_DOMAIN
 # e.g. [(10, "mx1.hostname."), (10, "mx2.hostname.")]
 EMAIL_SERVERS_WITH_PRIORITY = sl_getenv("EMAIL_SERVERS_WITH_PRIORITY")
 
+PROTON_MX_SERVERS = get_env_csv(
+    "PROTON_MX_SERVERS", "mail.protonmail.ch., mailsec.protonmail.ch."
+)
+
+PROTON_EMAIL_DOMAINS = get_env_csv(
+    "PROTON_EMAIL_DOMAINS", "proton.me, protonmail.com, protonmail.ch, proton.ch, pm.me"
+)
+
 # disable the alias suffix, i.e. the ".random_word" part
 DISABLE_ALIAS_SUFFIX = "DISABLE_ALIAS_SUFFIX" in os.environ
 
@@ -245,9 +291,7 @@ FACEBOOK_CLIENT_ID = os.environ.get("FACEBOOK_CLIENT_ID")
 FACEBOOK_CLIENT_SECRET = os.environ.get("FACEBOOK_CLIENT_SECRET")
 
 CONNECT_WITH_OIDC_ICON = os.environ.get("CONNECT_WITH_OIDC_ICON")
-OIDC_AUTHORIZATION_URL = os.environ.get("OIDC_AUTHORIZATION_URL")
-OIDC_USER_INFO_URL = os.environ.get("OIDC_USER_INFO_URL")
-OIDC_TOKEN_URL = os.environ.get("OIDC_TOKEN_URL")
+OIDC_WELL_KNOWN_URL = os.environ.get("OIDC_WELL_KNOWN_URL")
 OIDC_CLIENT_ID = os.environ.get("OIDC_CLIENT_ID")
 OIDC_CLIENT_SECRET = os.environ.get("OIDC_CLIENT_SECRET")
 OIDC_SCOPES = os.environ.get("OIDC_SCOPES")
@@ -283,6 +327,8 @@ JOB_DELETE_MAILBOX = "delete-mailbox"
 JOB_DELETE_DOMAIN = "delete-domain"
 JOB_SEND_USER_REPORT = "send-user-report"
 JOB_SEND_PROTON_WELCOME_1 = "proton-welcome-1"
+JOB_SEND_ALIAS_CREATION_EVENTS = "send-alias-creation-events"
+JOB_SEND_EVENT_TO_WEBHOOK = "send-event-to-webhook"
 
 # for pagination
 PAGE_LIMIT = 20
@@ -431,7 +477,7 @@ except Exception:
     HIBP_SCAN_INTERVAL_DAYS = 7
 HIBP_API_KEYS = sl_getenv("HIBP_API_KEYS", list) or []
 HIBP_MAX_ALIAS_CHECK = 10_000
-HIBP_RPM = 100
+HIBP_RPM = int(os.environ.get("HIBP_API_RPM", 100))
 HIBP_SKIP_PARTNER_ALIAS = os.environ.get("HIBP_SKIP_PARTNER_ALIAS")
 
 KEEP_OLD_DATA_DAYS = 30
@@ -575,7 +621,6 @@ SKIP_MX_LOOKUP_ON_CHECK = False
 
 DISABLE_RATE_LIMIT = "DISABLE_RATE_LIMIT" in os.environ
 
-SUBSCRIPTION_CHANGE_WEBHOOK = os.environ.get("SUBSCRIPTION_CHANGE_WEBHOOK", None)
 MAX_API_KEYS = int(os.environ.get("MAX_API_KEYS", 30))
 
 UPCLOUD_USERNAME = os.environ.get("UPCLOUD_USERNAME", None)
@@ -583,3 +628,59 @@ UPCLOUD_PASSWORD = os.environ.get("UPCLOUD_PASSWORD", None)
 UPCLOUD_DB_ID = os.environ.get("UPCLOUD_DB_ID", None)
 
 STORE_TRANSACTIONAL_EMAILS = "STORE_TRANSACTIONAL_EMAILS" in os.environ
+
+EVENT_WEBHOOK = os.environ.get("EVENT_WEBHOOK", None)
+
+# We want it disabled by default, so only skip if defined
+EVENT_WEBHOOK_SKIP_VERIFY_SSL = "EVENT_WEBHOOK_SKIP_VERIFY_SSL" in os.environ
+EVENT_WEBHOOK_DISABLE = "EVENT_WEBHOOK_DISABLE" in os.environ
+
+
+def read_webhook_enabled_user_ids() -> Optional[List[int]]:
+    user_ids = os.environ.get("EVENT_WEBHOOK_ENABLED_USER_IDS", None)
+    if user_ids is None:
+        return None
+
+    ids = []
+    for user_id in user_ids.split(","):
+        try:
+            ids.append(int(user_id.strip()))
+        except ValueError:
+            pass
+    return ids
+
+
+EVENT_WEBHOOK_ENABLED_USER_IDS: Optional[List[int]] = read_webhook_enabled_user_ids()
+
+# Allow to define a different DB_URI for the event listener, in case we want to skip the connection pool
+# It defaults to the regular DB_URI in case it's needed
+EVENT_LISTENER_DB_URI = os.environ.get("EVENT_LISTENER_DB_URI", DB_URI)
+
+
+def read_partner_dict(var: str) -> dict[int, str]:
+    partner_value = get_env_dict(var)
+    if len(partner_value) == 0:
+        return {}
+
+    res: dict[int, str] = {}
+    for partner_id in partner_value.keys():
+        try:
+            partner_id_int = int(partner_id.strip())
+            res[partner_id_int] = partner_value[partner_id]
+        except ValueError:
+            pass
+    return res
+
+
+PARTNER_DNS_CUSTOM_DOMAINS: dict[int, str] = read_partner_dict(
+    "PARTNER_DNS_CUSTOM_DOMAINS"
+)
+PARTNER_CUSTOM_DOMAIN_VALIDATION_PREFIXES: dict[int, str] = read_partner_dict(
+    "PARTNER_CUSTOM_DOMAIN_VALIDATION_PREFIXES"
+)
+
+MAILBOX_VERIFICATION_OVERRIDE_CODE: Optional[str] = os.environ.get(
+    "MAILBOX_VERIFICATION_OVERRIDE_CODE", None
+)
+
+AUDIT_LOG_MAX_DAYS = int(os.environ.get("AUDIT_LOG_MAX_DAYS", 30))

app/app/constants.py

@@ -0,0 +1,2 @@
+HEADER_ALLOW_API_COOKIES = "X-Sl-Allowcookies"
+DMARC_RECORD = "v=DMARC1; p=quarantine; pct=100; adkim=s; aspf=s"

app/app/contact_utils.py

@@ -0,0 +1,138 @@
+from dataclasses import dataclass
+from enum import Enum
+from typing import Optional
+
+from sqlalchemy.exc import IntegrityError
+
+from app.alias_audit_log_utils import emit_alias_audit_log, AliasAuditLogAction
+from app.db import Session
+from app.email_utils import generate_reply_email, parse_full_address
+from app.email_validation import is_valid_email
+from app.log import LOG
+from app.models import Contact, Alias
+from app.utils import sanitize_email
+
+
+class ContactCreateError(Enum):
+    InvalidEmail = "Invalid email"
+    NotAllowed = "Your plan does not allow to create contacts"
+    Unknown = "Unknown error when trying to create contact"
+
+
+@dataclass
+class ContactCreateResult:
+    contact: Optional[Contact]
+    created: bool
+    error: Optional[ContactCreateError]
+
+
+def __update_contact_if_needed(
+    contact: Contact, name: Optional[str], mail_from: Optional[str]
+) -> ContactCreateResult:
+    if name and contact.name != name:
+        LOG.d(f"Setting {contact} name to {name}")
+        contact.name = name
+        Session.commit()
+    if mail_from and contact.mail_from is None:
+        LOG.d(f"Setting {contact} mail_from to {mail_from}")
+        contact.mail_from = mail_from
+        Session.commit()
+    return ContactCreateResult(contact, created=False, error=None)
+
+
+def create_contact(
+    email: str,
+    alias: Alias,
+    name: Optional[str] = None,
+    mail_from: Optional[str] = None,
+    allow_empty_email: bool = False,
+    automatic_created: bool = False,
+    from_partner: bool = False,
+) -> ContactCreateResult:
+    # If user cannot create contacts, they still need to be created when receiving an email for an alias
+    if not automatic_created and not alias.user.can_create_contacts():
+        return ContactCreateResult(
+            None, created=False, error=ContactCreateError.NotAllowed
+        )
+    # Parse emails with form 'name <email>'
+    try:
+        email_name, email = parse_full_address(email)
+    except ValueError:
+        email = ""
+        email_name = ""
+    # If no name is explicitly given try to get it from the parsed email
+    if name is None:
+        name = email_name[: Contact.MAX_NAME_LENGTH]
+    else:
+        name = name[: Contact.MAX_NAME_LENGTH]
+    # If still no name is there, make sure the name is None instead of empty string
+    if not name:
+        name = None
+    if name is not None and "\x00" in name:
+        LOG.w("Cannot use contact name because has \\x00")
+        name = ""
+    # Sanitize email and if it's not valid only allow to create a contact if it's explicitly allowed. Otherwise fail
+    email = sanitize_email(email, not_lower=True)
+    if not is_valid_email(email):
+        LOG.w(f"invalid contact email {email}")
+        if not allow_empty_email:
+            return ContactCreateResult(
+                None, created=False, error=ContactCreateError.InvalidEmail
+            )
+        LOG.d("Create a contact with invalid email for %s", alias)
+        # either reuse a contact with empty email or create a new contact with empty email
+        email = ""
+    # If contact exists, update name and mail_from if needed
+    contact = Contact.get_by(alias_id=alias.id, website_email=email)
+    if contact is not None:
+        return __update_contact_if_needed(contact, name, mail_from)
+    # Create the contact
+    reply_email = generate_reply_email(email, alias)
+    alias_id = alias.id
+    try:
+        flags = Contact.FLAG_PARTNER_CREATED if from_partner else 0
+        is_invalid_email = email == ""
+        contact = Contact.create(
+            user_id=alias.user_id,
+            alias_id=alias.id,
+            website_email=email,
+            name=name,
+            reply_email=reply_email,
+            mail_from=mail_from,
+            automatic_created=automatic_created,
+            flags=flags,
+            invalid_email=is_invalid_email,
+            commit=True,
+        )
+        contact_id = contact.id
+        if automatic_created:
+            trail = ". Automatically created"
+        else:
+            trail = ". Created by user action"
+        emit_alias_audit_log(
+            alias=alias,
+            action=AliasAuditLogAction.CreateContact,
+            message=f"Created contact {contact_id} ({email}){trail}",
+            commit=True,
+        )
+        LOG.d(
+            f"Created contact {contact} for alias {alias} with email {email} invalid_email={is_invalid_email}"
+        )
+        return ContactCreateResult(contact, created=True, error=None)
+    except IntegrityError:
+        Session.rollback()
+        LOG.info(
+            f"Contact with email {email} for alias_id {alias_id} already existed, fetching from DB"
+        )
+        contact: Optional[Contact] = Contact.get_by(
+            alias_id=alias_id, website_email=email
+        )
+        if contact:
+            return __update_contact_if_needed(contact, name, mail_from)
+        else:
+            LOG.warning(
+                f"Could not find contact with email {email} for alias_id {alias_id} and it should exist"
+            )
+            return ContactCreateResult(
+                None, created=False, error=ContactCreateError.Unknown
+            )

app/app/coupon_utils.py

@@ -0,0 +1,144 @@
+from typing import Optional
+
+import arrow
+from sqlalchemy import or_, update, and_
+
+from app.config import ADMIN_EMAIL
+from app.db import Session
+from app.email_utils import send_email
+from app.events.event_dispatcher import EventDispatcher
+from app.events.generated.event_pb2 import EventContent, UserPlanChanged
+from app.log import LOG
+from app.models import (
+    User,
+    ManualSubscription,
+    Coupon,
+    LifetimeCoupon,
+    PartnerSubscription,
+    PartnerUser,
+)
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+
+
+class CouponUserCannotRedeemError(Exception):
+    pass
+
+
+def redeem_coupon(coupon_code: str, user: User) -> Optional[Coupon]:
+    if user.lifetime:
+        LOG.i(f"User {user} is a lifetime SL user. Cannot redeem coupons")
+        raise CouponUserCannotRedeemError()
+
+    sub = user.get_active_subscription()
+    if sub and not isinstance(sub, ManualSubscription):
+        LOG.i(
+            f"User {user} has an active subscription that is not manual. Cannot redeem coupon {coupon_code}"
+        )
+        raise CouponUserCannotRedeemError()
+
+    coupon = Coupon.get_by(code=coupon_code)
+    if not coupon:
+        LOG.i(f"User is trying to redeem coupon {coupon_code} that does not exist")
+        return None
+
+    now = arrow.utcnow()
+    stmt = (
+        update(Coupon)
+        .where(
+            and_(
+                Coupon.code == coupon_code,
+                Coupon.used == False,  # noqa: E712
+                or_(
+                    Coupon.expires_date == None,  # noqa: E711
+                    Coupon.expires_date > now,
+                ),
+            )
+        )
+        .values(used=True, used_by_user_id=user.id, updated_at=now)
+    )
+    res = Session.execute(stmt)
+    if res.rowcount == 0:
+        LOG.i(f"Coupon {coupon.id} could not be redeemed. It's expired or invalid.")
+        return None
+
+    LOG.i(
+        f"Redeemed normal coupon {coupon.id} for {coupon.nb_year} years by user {user}"
+    )
+    if sub:
+        # renew existing subscription
+        if sub.end_at > arrow.now():
+            sub.end_at = sub.end_at.shift(years=coupon.nb_year)
+        else:
+            sub.end_at = arrow.now().shift(years=coupon.nb_year, days=1)
+    else:
+        sub = ManualSubscription.create(
+            user_id=user.id,
+            end_at=arrow.now().shift(years=coupon.nb_year, days=1),
+            comment="using coupon code",
+            is_giveaway=coupon.is_giveaway,
+            commit=True,
+        )
+    emit_user_audit_log(
+        user=user,
+        action=UserAuditLogAction.Upgrade,
+        message=f"User {user} redeemed coupon {coupon.id} for {coupon.nb_year} years",
+    )
+    EventDispatcher.send_event(
+        user=user,
+        content=EventContent(
+            user_plan_change=UserPlanChanged(plan_end_time=sub.end_at.timestamp)
+        ),
+    )
+    Session.commit()
+    return coupon
+
+
+def redeem_lifetime_coupon(coupon_code: str, user: User) -> Optional[Coupon]:
+    if user.lifetime:
+        return None
+    partner_sub = (
+        Session.query(PartnerSubscription)
+        .join(PartnerUser, PartnerUser.id == PartnerSubscription.partner_user_id)
+        .filter(PartnerUser.user_id == user.id, PartnerSubscription.lifetime == True)  # noqa: E712
+        .first()
+    )
+    if partner_sub is not None:
+        return None
+    coupon: LifetimeCoupon = LifetimeCoupon.get_by(code=coupon_code)
+    if not coupon:
+        return None
+
+    stmt = (
+        update(LifetimeCoupon)
+        .where(
+            and_(
+                LifetimeCoupon.code == coupon_code,
+                LifetimeCoupon.nb_used > 0,
+            )
+        )
+        .values(nb_used=LifetimeCoupon.nb_used - 1)
+    )
+    res = Session.execute(stmt)
+    if res.rowcount == 0:
+        LOG.i("Coupon could not be redeemed")
+        return None
+
+    user.lifetime = True
+    user.lifetime_coupon_id = coupon.id
+    if coupon.paid:
+        user.paid_lifetime = True
+    EventDispatcher.send_event(
+        user=user,
+        content=EventContent(user_plan_change=UserPlanChanged(lifetime=True)),
+    )
+    Session.commit()
+
+    # notify admin
+    send_email(
+        ADMIN_EMAIL,
+        subject=f"User {user} used lifetime coupon({coupon.comment}). Coupon nb_used: {coupon.nb_used}",
+        plaintext="",
+        html="",
+    )
+
+    return coupon

app/app/custom_domain_utils.py

@@ -0,0 +1,206 @@
+import arrow
+import re
+
+from dataclasses import dataclass
+from enum import Enum
+from typing import List, Optional
+
+from app.config import JOB_DELETE_DOMAIN
+from app.db import Session
+from app.email_utils import get_email_domain_part
+from app.log import LOG
+from app.models import User, CustomDomain, SLDomain, Mailbox, Job, DomainMailbox
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+
+_ALLOWED_DOMAIN_REGEX = re.compile(r"^(?!-)[A-Za-z0-9-]{1,63}(?<!-)$")
+_MAX_MAILBOXES_PER_DOMAIN = 20
+
+
+@dataclass
+class CreateCustomDomainResult:
+    message: str = ""
+    message_category: str = ""
+    success: bool = False
+    instance: Optional[CustomDomain] = None
+    redirect: Optional[str] = None
+
+
+class CannotUseDomainReason(Enum):
+    InvalidDomain = 1
+    BuiltinDomain = 2
+    DomainAlreadyUsed = 3
+    DomainPartOfUserEmail = 4
+    DomainUserInMailbox = 5
+
+    def message(self, domain: str) -> str:
+        if self == CannotUseDomainReason.InvalidDomain:
+            return "This is not a valid domain"
+        elif self == CannotUseDomainReason.BuiltinDomain:
+            return "A custom domain cannot be a built-in domain."
+        elif self == CannotUseDomainReason.DomainAlreadyUsed:
+            return f"{domain} already used"
+        elif self == CannotUseDomainReason.DomainPartOfUserEmail:
+            return "You cannot add a domain that you are currently using for your personal email. Please change your personal email to your real email"
+        elif self == CannotUseDomainReason.DomainUserInMailbox:
+            return f"{domain} already used in a SimpleLogin mailbox"
+        else:
+            raise Exception("Invalid CannotUseDomainReason")
+
+
+class CannotSetCustomDomainMailboxesCause(Enum):
+    InvalidMailbox = "Something went wrong, please retry"
+    NoMailboxes = "You must select at least 1 mailbox"
+    TooManyMailboxes = (
+        f"You can only set up to {_MAX_MAILBOXES_PER_DOMAIN} mailboxes per domain"
+    )
+
+
+@dataclass
+class SetCustomDomainMailboxesResult:
+    success: bool
+    reason: Optional[CannotSetCustomDomainMailboxesCause] = None
+
+
+def is_valid_domain(domain: str) -> bool:
+    """
+    Checks that a domain is valid according to RFC 1035
+    """
+    if len(domain) > 255:
+        return False
+    if domain.endswith("."):
+        domain = domain[:-1]  # Strip the trailing dot
+    labels = domain.split(".")
+    if not labels:
+        return False
+    for label in labels:
+        if not _ALLOWED_DOMAIN_REGEX.match(label):
+            return False
+    return True
+
+
+def sanitize_domain(domain: str) -> str:
+    new_domain = domain.lower().strip()
+    if new_domain.startswith("http://"):
+        new_domain = new_domain[len("http://") :]
+
+    if new_domain.startswith("https://"):
+        new_domain = new_domain[len("https://") :]
+
+    return new_domain
+
+
+def can_domain_be_used(user: User, domain: str) -> Optional[CannotUseDomainReason]:
+    if not is_valid_domain(domain):
+        return CannotUseDomainReason.InvalidDomain
+    elif SLDomain.get_by(domain=domain):
+        return CannotUseDomainReason.BuiltinDomain
+    elif CustomDomain.get_by(domain=domain):
+        return CannotUseDomainReason.DomainAlreadyUsed
+    elif get_email_domain_part(user.email) == domain:
+        return CannotUseDomainReason.DomainPartOfUserEmail
+    elif Mailbox.filter(
+        Mailbox.verified.is_(True), Mailbox.email.endswith(f"@{domain}")
+    ).first():
+        return CannotUseDomainReason.DomainUserInMailbox
+    else:
+        return None
+
+
+def create_custom_domain(
+    user: User, domain: str, partner_id: Optional[int] = None
+) -> CreateCustomDomainResult:
+    if not user.is_premium():
+        return CreateCustomDomainResult(
+            message="Only premium plan can add custom domain",
+            message_category="warning",
+        )
+
+    new_domain = sanitize_domain(domain)
+    domain_forbidden_cause = can_domain_be_used(user, new_domain)
+    if domain_forbidden_cause:
+        return CreateCustomDomainResult(
+            message=domain_forbidden_cause.message(new_domain), message_category="error"
+        )
+
+    new_custom_domain = CustomDomain.create(domain=new_domain, user_id=user.id)
+
+    # new domain has ownership verified if its parent has the ownership verified
+    for root_cd in user.custom_domains:
+        if new_domain.endswith("." + root_cd.domain) and root_cd.ownership_verified:
+            LOG.i(
+                "%s ownership verified thanks to %s",
+                new_custom_domain,
+                root_cd,
+            )
+            new_custom_domain.ownership_verified = True
+
+    # Add the partner_id in case it's passed
+    if partner_id is not None:
+        new_custom_domain.partner_id = partner_id
+
+    emit_user_audit_log(
+        user=user,
+        action=UserAuditLogAction.CreateCustomDomain,
+        message=f"Created custom domain {new_custom_domain.id} ({new_domain})",
+    )
+    Session.commit()
+
+    return CreateCustomDomainResult(
+        success=True,
+        instance=new_custom_domain,
+    )
+
+
+def delete_custom_domain(domain: CustomDomain):
+    # Schedule delete domain job
+    LOG.w("schedule delete domain job for %s", domain)
+    domain.pending_deletion = True
+    Job.create(
+        name=JOB_DELETE_DOMAIN,
+        payload={"custom_domain_id": domain.id},
+        run_at=arrow.now(),
+        commit=True,
+    )
+
+
+def set_custom_domain_mailboxes(
+    user_id: int, custom_domain: CustomDomain, mailbox_ids: List[int]
+) -> SetCustomDomainMailboxesResult:
+    if len(mailbox_ids) == 0:
+        return SetCustomDomainMailboxesResult(
+            success=False, reason=CannotSetCustomDomainMailboxesCause.NoMailboxes
+        )
+    elif len(mailbox_ids) > _MAX_MAILBOXES_PER_DOMAIN:
+        return SetCustomDomainMailboxesResult(
+            success=False, reason=CannotSetCustomDomainMailboxesCause.TooManyMailboxes
+        )
+
+    mailboxes = (
+        Session.query(Mailbox)
+        .filter(
+            Mailbox.id.in_(mailbox_ids),
+            Mailbox.user_id == user_id,
+            Mailbox.verified == True,  # noqa: E712
+        )
+        .all()
+    )
+    if len(mailboxes) != len(mailbox_ids):
+        return SetCustomDomainMailboxesResult(
+            success=False, reason=CannotSetCustomDomainMailboxesCause.InvalidMailbox
+        )
+
+    # first remove all existing domain-mailboxes links
+    DomainMailbox.filter_by(domain_id=custom_domain.id).delete()
+    Session.flush()
+
+    for mailbox in mailboxes:
+        DomainMailbox.create(domain_id=custom_domain.id, mailbox_id=mailbox.id)
+
+    mailboxes_as_str = ",".join(map(str, mailbox_ids))
+    emit_user_audit_log(
+        user=custom_domain.user,
+        action=UserAuditLogAction.UpdateCustomDomain,
+        message=f"Updated custom domain {custom_domain.id} mailboxes (domain={custom_domain.domain}) (mailboxes={mailboxes_as_str})",
+    )
+    Session.commit()
+    return SetCustomDomainMailboxesResult(success=True)

app/app/custom_domain_validation.py

@@ -1,37 +1,293 @@
+from dataclasses import dataclass
+from typing import List, Optional
+
+from app import config
+from app.constants import DMARC_RECORD
 from app.db import Session
-from app.dns_utils import get_cname_record
+from app.dns_utils import (
+    DNSClient,
+    get_network_dns_client,
+)
 from app.models import CustomDomain
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+from app.utils import random_string
+
+
+@dataclass
+class DomainValidationResult:
+    success: bool
+    errors: [str]
+
+
+@dataclass
+class ExpectedValidationRecords:
+    recommended: str
+    allowed: list[str]
+
+
+def is_mx_equivalent(
+    mx_domains: dict[int, list[str]],
+    expected_mx_domains: dict[int, ExpectedValidationRecords],
+) -> bool:
+    """
+    Compare mx_domains with ref_mx_domains to see if they are equivalent.
+    mx_domains and ref_mx_domains are list of (priority, domain)
+
+    The priority order is taken into account but not the priority number.
+    For example, [(1, domain1), (2, domain2)] is equivalent to [(10, domain1), (20, domain2)]
+    """
+
+    expected_prios = []
+    for prio in expected_mx_domains:
+        expected_prios.append(prio)
+
+    if len(expected_prios) != len(mx_domains):
+        return False
+
+    for prio_position, prio_value in enumerate(sorted(mx_domains.keys())):
+        for domain in mx_domains[prio_value]:
+            if domain not in expected_mx_domains[expected_prios[prio_position]].allowed:
+                return False
+
+    return True
 
 
 class CustomDomainValidation:
-    def __init__(self, dkim_domain: str):
+    def __init__(
+        self,
+        dkim_domain: str,
+        dns_client: DNSClient = get_network_dns_client(),
+        partner_domains: Optional[dict[int, str]] = None,
+        partner_domains_validation_prefixes: Optional[dict[int, str]] = None,
+    ):
         self.dkim_domain = dkim_domain
-        self._dkim_records = {
-            (f"{key}._domainkey", f"{key}._domainkey.{self.dkim_domain}")
-            for key in ("dkim", "dkim02", "dkim03")
+        self._dns_client = dns_client
+        self._partner_domains = partner_domains or config.PARTNER_DNS_CUSTOM_DOMAINS
+        self._partner_domain_validation_prefixes = (
+            partner_domains_validation_prefixes
+            or config.PARTNER_CUSTOM_DOMAIN_VALIDATION_PREFIXES
+        )
+
+    def get_ownership_verification_record(
+        self, domain: CustomDomain
+    ) -> ExpectedValidationRecords:
+        prefixes = ["sl"]
+        if (
+            domain.partner_id is not None
+            and domain.partner_id in self._partner_domain_validation_prefixes
+        ):
+            prefixes.insert(
+                0, self._partner_domain_validation_prefixes[domain.partner_id]
+            )
+
+        if not domain.ownership_txt_token:
+            domain.ownership_txt_token = random_string(30)
+            Session.commit()
+
+        valid = [
+            f"{prefix}-verification={domain.ownership_txt_token}" for prefix in prefixes
+        ]
+        return ExpectedValidationRecords(recommended=valid[0], allowed=valid)
+
+    def get_expected_mx_records(
+        self, domain: CustomDomain
+    ) -> dict[int, ExpectedValidationRecords]:
+        records = {}
+        if domain.partner_id is not None and domain.partner_id in self._partner_domains:
+            domain = self._partner_domains[domain.partner_id]
+            records[10] = [f"mx1.{domain}."]
+            records[20] = [f"mx2.{domain}."]
+        # Default ones
+        for priority, domain in config.EMAIL_SERVERS_WITH_PRIORITY:
+            if priority not in records:
+                records[priority] = []
+            records[priority].append(domain)
+
+        return {
+            priority: ExpectedValidationRecords(
+                recommended=records[priority][0], allowed=records[priority]
+            )
+            for priority in records
         }
 
-    def get_dkim_records(self) -> {str: str}:
-        """
-        Get a list of dkim records to set up. It will be
+    def get_expected_spf_domain(
+        self, domain: CustomDomain
+    ) -> ExpectedValidationRecords:
+        records = []
+        if domain.partner_id is not None and domain.partner_id in self._partner_domains:
+            records.append(self._partner_domains[domain.partner_id])
+        else:
+            records.append(config.EMAIL_DOMAIN)
+        return ExpectedValidationRecords(recommended=records[0], allowed=records)
 
+    def get_expected_spf_record(self, domain: CustomDomain) -> str:
+        spf_domain = self.get_expected_spf_domain(domain)
+        return f"v=spf1 include:{spf_domain.recommended} ~all"
+
+    def get_dkim_records(
+        self, domain: CustomDomain
+    ) -> {str: ExpectedValidationRecords}:
         """
-        return self._dkim_records
+        Get a list of dkim records to set up. Depending on the custom_domain, whether if it's from a partner or not,
+        it will return the default ones or the partner ones.
+        """
+
+        # By default use the default domain
+        dkim_domains = [self.dkim_domain]
+        if domain.partner_id is not None:
+            # Domain is from a partner. Retrieve the partner config and use that domain as preferred if it exists
+            partner_domain = self._partner_domains.get(domain.partner_id, None)
+            if partner_domain is not None:
+                dkim_domains.insert(0, partner_domain)
+
+        output = {}
+        for key in ("dkim", "dkim02", "dkim03"):
+            records = [
+                f"{key}._domainkey.{dkim_domain}" for dkim_domain in dkim_domains
+            ]
+            output[f"{key}._domainkey"] = ExpectedValidationRecords(
+                recommended=records[0], allowed=records
+            )
+
+        return output
 
     def validate_dkim_records(self, custom_domain: CustomDomain) -> dict[str, str]:
         """
         Check if dkim records are properly set for this custom domain.
         Returns empty list if all records are ok. Other-wise return the records that aren't properly configured
         """
+        correct_records = {}
         invalid_records = {}
-        for prefix, expected_record in self.get_dkim_records():
+        expected_records = self.get_dkim_records(custom_domain)
+        for prefix, expected_record in expected_records.items():
             custom_record = f"{prefix}.{custom_domain.domain}"
-            dkim_record = get_cname_record(custom_record)
-            if dkim_record != expected_record:
+            dkim_record = self._dns_client.get_cname_record(custom_record)
+            if dkim_record in expected_record.allowed:
+                correct_records[prefix] = custom_record
+            else:
                 invalid_records[custom_record] = dkim_record or "empty"
-        # HACK: If dkim is enabled, don't disable it to give users time to update their CNAMES
+
+        # HACK
+        # As initially we only had one dkim record, we want to allow users that had only the original dkim record and
+        # the domain validated to continue seeing it as validated (although showing them the missing records).
+        # However, if not even the original dkim record is right, even if the domain was dkim_verified in the past,
+        # we will remove the dkim_verified flag.
+        # This is done in order to give users with the old dkim config (only one) to update their CNAMEs
         if custom_domain.dkim_verified:
-            return invalid_records
+            # Check if at least the original dkim is there
+            if correct_records.get("dkim._domainkey") is not None:
+                # Original dkim record is there. Return the missing records (if any) and don't clear the flag
+                return invalid_records
+
+            # Original DKIM record is not there, which means the DKIM config is not finished. Proceed with the
+            # rest of the code path, returning the invalid records and clearing the flag
         custom_domain.dkim_verified = len(invalid_records) == 0
+        if custom_domain.dkim_verified:
+            emit_user_audit_log(
+                user=custom_domain.user,
+                action=UserAuditLogAction.VerifyCustomDomain,
+                message=f"Verified DKIM records for custom domain {custom_domain.id} ({custom_domain.domain})",
+            )
         Session.commit()
         return invalid_records
+
+    def validate_domain_ownership(
+        self, custom_domain: CustomDomain
+    ) -> DomainValidationResult:
+        """
+        Check if the custom_domain has added the ownership verification records
+        """
+        txt_records = self._dns_client.get_txt_record(custom_domain.domain)
+        expected_verification_records = self.get_ownership_verification_record(
+            custom_domain
+        )
+        found = False
+        for verification_record in expected_verification_records.allowed:
+            if verification_record in txt_records:
+                found = True
+                break
+        if found:
+            custom_domain.ownership_verified = True
+            emit_user_audit_log(
+                user=custom_domain.user,
+                action=UserAuditLogAction.VerifyCustomDomain,
+                message=f"Verified ownership for custom domain {custom_domain.id} ({custom_domain.domain})",
+            )
+            Session.commit()
+            return DomainValidationResult(success=True, errors=[])
+        else:
+            return DomainValidationResult(success=False, errors=txt_records)
+
+    def validate_mx_records(
+        self, custom_domain: CustomDomain
+    ) -> DomainValidationResult:
+        mx_domains = self._dns_client.get_mx_domains(custom_domain.domain)
+        expected_mx_records = self.get_expected_mx_records(custom_domain)
+
+        if not is_mx_equivalent(mx_domains, expected_mx_records):
+            errors = []
+            for prio in mx_domains:
+                for mx_domain in mx_domains[prio]:
+                    errors.append(f"{prio} {mx_domain}")
+            return DomainValidationResult(success=False, errors=errors)
+        else:
+            custom_domain.verified = True
+            emit_user_audit_log(
+                user=custom_domain.user,
+                action=UserAuditLogAction.VerifyCustomDomain,
+                message=f"Verified MX records for custom domain {custom_domain.id} ({custom_domain.domain})",
+            )
+            Session.commit()
+            return DomainValidationResult(success=True, errors=[])
+
+    def validate_spf_records(
+        self, custom_domain: CustomDomain
+    ) -> DomainValidationResult:
+        spf_domains = self._dns_client.get_spf_domain(custom_domain.domain)
+        expected_spf_domain = self.get_expected_spf_domain(custom_domain)
+        if len(set(expected_spf_domain.allowed).intersection(set(spf_domains))) > 0:
+            custom_domain.spf_verified = True
+            emit_user_audit_log(
+                user=custom_domain.user,
+                action=UserAuditLogAction.VerifyCustomDomain,
+                message=f"Verified SPF records for custom domain {custom_domain.id} ({custom_domain.domain})",
+            )
+            Session.commit()
+            return DomainValidationResult(success=True, errors=[])
+        else:
+            custom_domain.spf_verified = False
+            Session.commit()
+            txt_records = self._dns_client.get_txt_record(custom_domain.domain)
+            cleaned_records = self.__clean_spf_records(txt_records, custom_domain)
+            return DomainValidationResult(
+                success=False,
+                errors=cleaned_records,
+            )
+
+    def validate_dmarc_records(
+        self, custom_domain: CustomDomain
+    ) -> DomainValidationResult:
+        txt_records = self._dns_client.get_txt_record("_dmarc." + custom_domain.domain)
+        if DMARC_RECORD in txt_records:
+            custom_domain.dmarc_verified = True
+            emit_user_audit_log(
+                user=custom_domain.user,
+                action=UserAuditLogAction.VerifyCustomDomain,
+                message=f"Verified DMARC records for custom domain {custom_domain.id} ({custom_domain.domain})",
+            )
+            Session.commit()
+            return DomainValidationResult(success=True, errors=[])
+        else:
+            custom_domain.dmarc_verified = False
+            Session.commit()
+            return DomainValidationResult(success=False, errors=txt_records)
+
+    def __clean_spf_records(
+        self, txt_records: List[str], custom_domain: CustomDomain
+    ) -> List[str]:
+        final_records = []
+        verification_records = self.get_ownership_verification_record(custom_domain)
+        for record in txt_records:
+            if record not in verification_records.allowed:
+                final_records.append(record)
+        return final_records

app/app/dashboard/views/account_setting.py

@@ -1,3 +1,5 @@
+import secrets
+
 import arrow
 from flask import (
     render_template,
@@ -37,7 +39,7 @@ from app.models import (
     SenderFormatEnum,
     UnsubscribeBehaviourEnum,
 )
-from app.proton.utils import perform_proton_account_unlink
+from app.proton.proton_unlink import perform_proton_account_unlink
 from app.utils import (
     random_string,
     CSRFValidationForm,
@@ -163,13 +165,13 @@ def send_reset_password_email(user):
     """
     # the activation code is valid for 1h
     reset_password_code = ResetPasswordCode.create(
-        user_id=user.id, code=random_string(60)
+        user_id=user.id, code=secrets.token_urlsafe(32)
     )
     Session.commit()
 
     reset_password_link = f"{URL}/auth/reset_password?code={reset_password_code.code}"
 
-    email_utils.send_reset_password_email(user.email, reset_password_link)
+    email_utils.send_reset_password_email(user, reset_password_link)
 
 
 def send_change_email_confirmation(user: User, email_change: EmailChange):
@@ -179,7 +181,7 @@ def send_change_email_confirmation(user: User, email_change: EmailChange):
 
     link = f"{URL}/auth/change_email?code={email_change.code}"
 
-    email_utils.send_change_email(email_change.new_email, user.email, link)
+    email_utils.send_change_email(user, email_change.new_email, link)
 
 
 @dashboard_bp.route("/resend_email_change", methods=["GET", "POST"])
@@ -237,6 +239,8 @@ def unlink_proton_account():
         flash("Invalid request", "warning")
         return redirect(url_for("dashboard.setting"))
 
-    perform_proton_account_unlink(current_user)
-    flash("Your Proton account has been unlinked", "success")
+    if not perform_proton_account_unlink(current_user):
+        flash("Account cannot be unlinked", "warning")
+    else:
+        flash("Your Proton account has been unlinked", "success")
     return redirect(url_for("dashboard.setting"))

app/app/dashboard/views/alias_contact_manager.py

@@ -1,5 +1,6 @@
 from dataclasses import dataclass
 from operator import or_
+from typing import Optional
 
 from flask import render_template, request, redirect, flash
 from flask import url_for
@@ -9,13 +10,11 @@ from sqlalchemy import and_, func, case
 from wtforms import StringField, validators, ValidationError
 
 # Need to import directly from config to allow modification from the tests
-from app import config, parallel_limiter
+from app import config, parallel_limiter, contact_utils
+from app.alias_audit_log_utils import emit_alias_audit_log, AliasAuditLogAction
+from app.contact_utils import ContactCreateError
 from app.dashboard.base import dashboard_bp
 from app.db import Session
-from app.email_utils import (
-    generate_reply_email,
-    parse_full_address,
-)
 from app.email_validation import is_valid_email
 from app.errors import (
     CannotCreateContactForReverseAlias,
@@ -24,8 +23,8 @@ from app.errors import (
     ErrContactAlreadyExists,
 )
 from app.log import LOG
-from app.models import Alias, Contact, EmailLog, User
-from app.utils import sanitize_email, CSRFValidationForm
+from app.models import Alias, Contact, EmailLog
+from app.utils import CSRFValidationForm
 
 
 def email_validator():
@@ -51,7 +50,7 @@ def email_validator():
     return _check
 
 
-def create_contact(user: User, alias: Alias, contact_address: str) -> Contact:
+def create_contact(alias: Alias, contact_address: str) -> Contact:
     """
     Create a contact for a user. Can be restricted for new free users by enabling DISABLE_CREATE_CONTACTS_FOR_FREE_USERS.
     Can throw exceptions:
@@ -61,37 +60,23 @@ def create_contact(user: User, alias: Alias, contact_address: str) -> Contact:
     """
     if not contact_address:
         raise ErrAddressInvalid("Empty address")
-    try:
-        contact_name, contact_email = parse_full_address(contact_address)
-    except ValueError:
+    output = contact_utils.create_contact(email=contact_address, alias=alias)
+    if output.error == ContactCreateError.InvalidEmail:
         raise ErrAddressInvalid(contact_address)
-
-    contact_email = sanitize_email(contact_email)
-    if not is_valid_email(contact_email):
-        raise ErrAddressInvalid(contact_email)
-
-    contact = Contact.get_by(alias_id=alias.id, website_email=contact_email)
-    if contact:
-        raise ErrContactAlreadyExists(contact)
-
-    if not user.can_create_contacts():
+    elif output.error == ContactCreateError.NotAllowed:
         raise ErrContactErrorUpgradeNeeded()
+    elif output.error is not None:
+        raise ErrAddressInvalid("Invalid address")
+    elif not output.created:
+        raise ErrContactAlreadyExists(output.contact)
 
-    contact = Contact.create(
-        user_id=alias.user_id,
-        alias_id=alias.id,
-        website_email=contact_email,
-        name=contact_name,
-        reply_email=generate_reply_email(contact_email, alias),
-    )
-
+    contact = output.contact
     LOG.d(
         "create reverse-alias for %s %s, reverse alias:%s",
         contact_address,
         alias,
         contact.reply_email,
     )
-    Session.commit()
 
     return contact
 
@@ -207,7 +192,7 @@ def get_contact_infos(
 
 
 def delete_contact(alias: Alias, contact_id: int):
-    contact = Contact.get(contact_id)
+    contact: Optional[Contact] = Contact.get(contact_id)
 
     if not contact:
         flash("Unknown error. Refresh the page", "warning")
@@ -215,6 +200,11 @@ def delete_contact(alias: Alias, contact_id: int):
         flash("You cannot delete reverse-alias", "warning")
     else:
         delete_contact_email = contact.website_email
+        emit_alias_audit_log(
+            alias=alias,
+            action=AliasAuditLogAction.DeleteContact,
+            message=f"Delete contact {contact_id} ({contact.email})",
+        )
         Contact.delete(contact_id)
         Session.commit()
 
@@ -237,7 +227,10 @@ def alias_contact_manager(alias_id):
 
     page = 0
     if request.args.get("page"):
-        page = int(request.args.get("page"))
+        try:
+            page = int(request.args.get("page"))
+        except ValueError:
+            pass
 
     query = request.args.get("query") or ""
 
@@ -261,7 +254,7 @@ def alias_contact_manager(alias_id):
             if new_contact_form.validate():
                 contact_address = new_contact_form.email.data.strip()
                 try:
-                    contact = create_contact(current_user, alias, contact_address)
+                    contact = create_contact(alias, contact_address)
                 except (
                     ErrContactErrorUpgradeNeeded,
                     ErrAddressInvalid,

app/app/dashboard/views/alias_transfer.py

@@ -7,6 +7,7 @@ from flask import render_template, redirect, url_for, flash, request
 from flask_login import login_required, current_user
 
 from app import config
+from app.alias_audit_log_utils import emit_alias_audit_log, AliasAuditLogAction
 from app.alias_utils import transfer_alias
 from app.dashboard.base import dashboard_bp
 from app.dashboard.views.enter_sudo import sudo_required
@@ -57,6 +58,12 @@ def alias_transfer_send_route(alias_id):
             transfer_token = f"{alias.id}.{secrets.token_urlsafe(32)}"
             alias.transfer_token = hmac_alias_transfer_token(transfer_token)
             alias.transfer_token_expiration = arrow.utcnow().shift(hours=24)
+
+            emit_alias_audit_log(
+                alias,
+                AliasAuditLogAction.InitiateTransferAlias,
+                "Initiated alias transfer",
+            )
             Session.commit()
             alias_transfer_url = (
                 config.URL

app/app/dashboard/views/contact_detail.py

@@ -1,8 +1,11 @@
+from typing import Optional
+
 from flask import render_template, request, redirect, url_for, flash
 from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
 from wtforms import StringField, validators
 
+from app.alias_audit_log_utils import emit_alias_audit_log, AliasAuditLogAction
 from app.dashboard.base import dashboard_bp
 from app.db import Session
 from app.models import Contact
@@ -20,7 +23,7 @@ class PGPContactForm(FlaskForm):
 @dashboard_bp.route("/contact/<int:contact_id>/", methods=["GET", "POST"])
 @login_required
 def contact_detail_route(contact_id):
-    contact = Contact.get(contact_id)
+    contact: Optional[Contact] = Contact.get(contact_id)
     if not contact or contact.user_id != current_user.id:
         flash("You cannot see this page", "warning")
         return redirect(url_for("dashboard.index"))
@@ -50,6 +53,11 @@ def contact_detail_route(contact_id):
                     except PGPException:
                         flash("Cannot add the public key, please verify it", "error")
                     else:
+                        emit_alias_audit_log(
+                            alias=alias,
+                            action=AliasAuditLogAction.UpdateContact,
+                            message=f"Added PGP key {contact.pgp_public_key} for contact {contact_id} ({contact.email})",
+                        )
                         Session.commit()
                         flash(
                             f"PGP public key for {contact.email} is saved successfully",
@@ -62,6 +70,11 @@ def contact_detail_route(contact_id):
                         )
             elif pgp_form.action.data == "remove":
                 # Free user can decide to remove contact PGP key
+                emit_alias_audit_log(
+                    alias=alias,
+                    action=AliasAuditLogAction.UpdateContact,
+                    message=f"Removed PGP key {contact.pgp_public_key} for contact {contact_id} ({contact.email})",
+                )
                 contact.pgp_public_key = None
                 contact.pgp_finger_print = None
                 Session.commit()

app/app/dashboard/views/coupon.py

@@ -1,17 +1,15 @@
 import arrow
-from flask import render_template, flash, redirect, url_for, request
+from flask import render_template, flash, redirect, url_for
 from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
 from wtforms import StringField, validators
 
 from app import parallel_limiter
 from app.config import PADDLE_VENDOR_ID, PADDLE_COUPON_ID
+from app.coupon_utils import redeem_coupon, CouponUserCannotRedeemError
 from app.dashboard.base import dashboard_bp
-from app.db import Session
 from app.log import LOG
 from app.models import (
-    ManualSubscription,
-    Coupon,
     Subscription,
     AppleSubscription,
     CoinbaseSubscription,
@@ -58,56 +56,23 @@ def coupon_route():
 
     if coupon_form.validate_on_submit():
         code = coupon_form.code.data
-
-        coupon: Coupon = Coupon.get_by(code=code)
-        if coupon and not coupon.used:
-            if coupon.expires_date and coupon.expires_date < arrow.now():
-                flash(
-                    f"The coupon was expired on {coupon.expires_date.humanize()}",
-                    "error",
-                )
-                return redirect(request.url)
-
-            updated = (
-                Session.query(Coupon)
-                .filter_by(code=code, used=False)
-                .update({"used_by_user_id": current_user.id, "used": True})
-            )
-            if updated != 1:
-                flash("Coupon is not valid", "error")
-                return redirect(request.url)
-
-            manual_sub: ManualSubscription = ManualSubscription.get_by(
-                user_id=current_user.id
-            )
-            if manual_sub:
-                # renew existing subscription
-                if manual_sub.end_at > arrow.now():
-                    manual_sub.end_at = manual_sub.end_at.shift(years=coupon.nb_year)
-                else:
-                    manual_sub.end_at = arrow.now().shift(years=coupon.nb_year, days=1)
-                Session.commit()
-                flash(
-                    f"Your current subscription is extended to {manual_sub.end_at.humanize()}",
-                    "success",
-                )
-            else:
-                ManualSubscription.create(
-                    user_id=current_user.id,
-                    end_at=arrow.now().shift(years=coupon.nb_year, days=1),
-                    comment="using coupon code",
-                    is_giveaway=coupon.is_giveaway,
-                    commit=True,
-                )
+        try:
+            coupon = redeem_coupon(code, current_user)
+            if coupon:
                 flash(
                     "Your account has been upgraded to Premium, thanks for your support!",
                     "success",
                 )
-
-            return redirect(url_for("dashboard.index"))
-
-        else:
-            flash(f"Code *{code}* expired or invalid", "warning")
+            else:
+                flash(
+                    "This coupon cannot be redeemed. It's invalid or has expired",
+                    "warning",
+                )
+        except CouponUserCannotRedeemError:
+            flash(
+                "You have an active subscription. Please remove it before redeeming a coupon",
+                "warning",
+            )
 
     return render_template(
         "dashboard/coupon.html",

app/app/dashboard/views/custom_domain.py

@@ -5,11 +5,9 @@ from wtforms import StringField, validators
 
 from app import parallel_limiter
 from app.config import EMAIL_SERVERS_WITH_PRIORITY
+from app.custom_domain_utils import create_custom_domain
 from app.dashboard.base import dashboard_bp
-from app.db import Session
-from app.email_utils import get_email_domain_part
-from app.log import LOG
-from app.models import CustomDomain, Mailbox, DomainMailbox, SLDomain
+from app.models import CustomDomain
 
 
 class NewCustomDomainForm(FlaskForm):
@@ -23,13 +21,12 @@ class NewCustomDomainForm(FlaskForm):
 @parallel_limiter.lock(only_when=lambda: request.method == "POST")
 def custom_domain():
     custom_domains = CustomDomain.filter_by(
-        user_id=current_user.id, is_sl_subdomain=False
+        user_id=current_user.id,
+        is_sl_subdomain=False,
+        pending_deletion=False,
     ).all()
-    mailboxes = current_user.mailboxes()
     new_custom_domain_form = NewCustomDomainForm()
 
-    errors = {}
-
     if request.method == "POST":
         if request.form.get("form-name") == "create":
             if not current_user.is_premium():
@@ -37,87 +34,25 @@ def custom_domain():
                 return redirect(url_for("dashboard.custom_domain"))
 
             if new_custom_domain_form.validate():
-                new_domain = new_custom_domain_form.domain.data.lower().strip()
-
-                if new_domain.startswith("http://"):
-                    new_domain = new_domain[len("http://") :]
-
-                if new_domain.startswith("https://"):
-                    new_domain = new_domain[len("https://") :]
-
-                if SLDomain.get_by(domain=new_domain):
-                    flash("A custom domain cannot be a built-in domain.", "error")
-                elif CustomDomain.get_by(domain=new_domain):
-                    flash(f"{new_domain} already used", "error")
-                elif get_email_domain_part(current_user.email) == new_domain:
-                    flash(
-                        "You cannot add a domain that you are currently using for your personal email. "
-                        "Please change your personal email to your real email",
-                        "error",
-                    )
-                elif Mailbox.filter(
-                    Mailbox.verified.is_(True), Mailbox.email.endswith(f"@{new_domain}")
-                ).first():
-                    flash(
-                        f"{new_domain} already used in a SimpleLogin mailbox", "error"
-                    )
-                else:
-                    new_custom_domain = CustomDomain.create(
-                        domain=new_domain, user_id=current_user.id
-                    )
-                    # new domain has ownership verified if its parent has the ownership verified
-                    for root_cd in current_user.custom_domains:
-                        if (
-                            new_domain.endswith("." + root_cd.domain)
-                            and root_cd.ownership_verified
-                        ):
-                            LOG.i(
-                                "%s ownership verified thanks to %s",
-                                new_custom_domain,
-                                root_cd,
-                            )
-                            new_custom_domain.ownership_verified = True
-
-                    Session.commit()
-
-                    mailbox_ids = request.form.getlist("mailbox_ids")
-                    if mailbox_ids:
-                        # check if mailbox is not tempered with
-                        mailboxes = []
-                        for mailbox_id in mailbox_ids:
-                            mailbox = Mailbox.get(mailbox_id)
-                            if (
-                                not mailbox
-                                or mailbox.user_id != current_user.id
-                                or not mailbox.verified
-                            ):
-                                flash("Something went wrong, please retry", "warning")
-                                return redirect(url_for("dashboard.custom_domain"))
-                            mailboxes.append(mailbox)
-
-                        for mailbox in mailboxes:
-                            DomainMailbox.create(
-                                domain_id=new_custom_domain.id, mailbox_id=mailbox.id
-                            )
-
-                        Session.commit()
-
-                    flash(
-                        f"New domain {new_custom_domain.domain} is created", "success"
-                    )
-
+                res = create_custom_domain(
+                    user=current_user, domain=new_custom_domain_form.domain.data
+                )
+                if res.success:
+                    flash(f"New domain {res.instance.domain} is created", "success")
                     return redirect(
                         url_for(
                             "dashboard.domain_detail_dns",
-                            custom_domain_id=new_custom_domain.id,
+                            custom_domain_id=res.instance.id,
                         )
                     )
+                else:
+                    flash(res.message, res.message_category)
+                    if res.redirect:
+                        return redirect(url_for(res.redirect))
 
     return render_template(
         "dashboard/custom_domain.html",
         custom_domains=custom_domains,
         new_custom_domain_form=new_custom_domain_form,
         EMAIL_SERVERS_WITH_PRIORITY=EMAIL_SERVERS_WITH_PRIORITY,
-        errors=errors,
-        mailboxes=mailboxes,
     )

app/app/dashboard/views/delete_account.py

@@ -8,6 +8,7 @@ from app.dashboard.base import dashboard_bp
 from app.dashboard.views.enter_sudo import sudo_required
 from app.log import LOG
 from app.models import Subscription, Job
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 
 
 class DeleteDirForm(FlaskForm):
@@ -33,6 +34,11 @@ def delete_account():
 
         # Schedule delete account job
         LOG.w("schedule delete account job for %s", current_user)
+        emit_user_audit_log(
+            user=current_user,
+            action=UserAuditLogAction.UserMarkedForDeletion,
+            message=f"User {current_user.id} ({current_user.email}) marked for deletion via webapp",
+        )
         Job.create(
             name=JOB_DELETE_ACCOUNT,
             payload={"user_id": current_user.id},

app/app/dashboard/views/directory.py

@@ -1,3 +1,5 @@
+from typing import Optional
+
 from flask import render_template, request, redirect, url_for, flash
 from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
@@ -20,6 +22,7 @@ from app.dashboard.base import dashboard_bp
 from app.db import Session
 from app.errors import DirectoryInTrashError
 from app.models import Directory, Mailbox, DirectoryMailbox
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 
 
 class NewDirForm(FlaskForm):
@@ -69,7 +72,9 @@ def directory():
             if not delete_dir_form.validate():
                 flash("Invalid request", "warning")
                 return redirect(url_for("dashboard.directory"))
-            dir_obj = Directory.get(delete_dir_form.directory_id.data)
+            dir_obj: Optional[Directory] = Directory.get(
+                delete_dir_form.directory_id.data
+            )
 
             if not dir_obj:
                 flash("Unknown error. Refresh the page", "warning")
@@ -79,6 +84,11 @@ def directory():
                 return redirect(url_for("dashboard.directory"))
 
             name = dir_obj.name
+            emit_user_audit_log(
+                user=current_user,
+                action=UserAuditLogAction.DeleteDirectory,
+                message=f"Delete directory {dir_obj.id} ({dir_obj.name})",
+            )
             Directory.delete(dir_obj.id)
             Session.commit()
             flash(f"Directory {name} has been deleted", "success")
@@ -90,7 +100,7 @@ def directory():
                 flash("Invalid request", "warning")
                 return redirect(url_for("dashboard.directory"))
             dir_id = toggle_dir_form.directory_id.data
-            dir_obj = Directory.get(dir_id)
+            dir_obj: Optional[Directory] = Directory.get(dir_id)
 
             if not dir_obj or dir_obj.user_id != current_user.id:
                 flash("Unknown error. Refresh the page", "warning")
@@ -103,6 +113,11 @@ def directory():
                 dir_obj.disabled = True
                 flash(f"On-the-fly is disabled for {dir_obj.name}", "warning")
 
+            emit_user_audit_log(
+                user=current_user,
+                action=UserAuditLogAction.UpdateDirectory,
+                message=f"Updated directory {dir_obj.id} ({dir_obj.name}) set disabled = {dir_obj.disabled}",
+            )
             Session.commit()
 
             return redirect(url_for("dashboard.directory"))
@@ -112,7 +127,7 @@ def directory():
                 flash("Invalid request", "warning")
                 return redirect(url_for("dashboard.directory"))
             dir_id = update_dir_form.directory_id.data
-            dir_obj = Directory.get(dir_id)
+            dir_obj: Optional[Directory] = Directory.get(dir_id)
 
             if not dir_obj or dir_obj.user_id != current_user.id:
                 flash("Unknown error. Refresh the page", "warning")
@@ -143,6 +158,12 @@ def directory():
             for mailbox in mailboxes:
                 DirectoryMailbox.create(directory_id=dir_obj.id, mailbox_id=mailbox.id)
 
+            mailboxes_as_str = ",".join(map(str, mailbox_ids))
+            emit_user_audit_log(
+                user=current_user,
+                action=UserAuditLogAction.UpdateDirectory,
+                message=f"Updated directory {dir_obj.id} ({dir_obj.name}) mailboxes ({mailboxes_as_str})",
+            )
             Session.commit()
             flash(f"Directory {dir_obj.name} has been updated", "success")
 
@@ -181,6 +202,11 @@ def directory():
                         new_dir = Directory.create(
                             name=new_dir_name, user_id=current_user.id
                         )
+                        emit_user_audit_log(
+                            user=current_user,
+                            action=UserAuditLogAction.CreateDirectory,
+                            message=f"New directory {new_dir.name} ({new_dir.name})",
+                        )
                     except DirectoryInTrashError:
                         flash(
                             f"{new_dir_name} has been used before and cannot be reused",

app/app/dashboard/views/domain_detail.py

@@ -1,33 +1,26 @@
 import re
 
-import arrow
 from flask import render_template, request, redirect, url_for, flash
 from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
 from wtforms import StringField, validators, IntegerField
 
-from app.config import EMAIL_SERVERS_WITH_PRIORITY, EMAIL_DOMAIN, JOB_DELETE_DOMAIN
+from app.config import EMAIL_SERVERS_WITH_PRIORITY, EMAIL_DOMAIN
+from app.constants import DMARC_RECORD
+from app.custom_domain_utils import delete_custom_domain, set_custom_domain_mailboxes
 from app.custom_domain_validation import CustomDomainValidation
 from app.dashboard.base import dashboard_bp
 from app.db import Session
-from app.dns_utils import (
-    get_mx_domains,
-    get_spf_domain,
-    get_txt_record,
-    is_mx_equivalent,
-)
-from app.log import LOG
 from app.models import (
     CustomDomain,
     Alias,
     DomainDeletedAlias,
     Mailbox,
-    DomainMailbox,
     AutoCreateRule,
     AutoCreateRuleMailbox,
-    Job,
 )
 from app.regex_utils import regex_match
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 from app.utils import random_string, CSRFValidationForm
 
 
@@ -44,13 +37,9 @@ def domain_detail_dns(custom_domain_id):
         custom_domain.ownership_txt_token = random_string(30)
         Session.commit()
 
-    spf_record = f"v=spf1 include:{EMAIL_DOMAIN} ~all"
-
     domain_validator = CustomDomainValidation(EMAIL_DOMAIN)
     csrf_form = CSRFValidationForm()
 
-    dmarc_record = "v=DMARC1; p=quarantine; pct=100; adkim=s; aspf=s"
-
     mx_ok = spf_ok = dkim_ok = dmarc_ok = ownership_ok = True
     mx_errors = spf_errors = dkim_errors = dmarc_errors = ownership_errors = []
 
@@ -59,15 +48,14 @@ def domain_detail_dns(custom_domain_id):
             flash("Invalid request", "warning")
             return redirect(request.url)
         if request.form.get("form-name") == "check-ownership":
-            txt_records = get_txt_record(custom_domain.domain)
-
-            if custom_domain.get_ownership_dns_txt_value() in txt_records:
+            ownership_validation_result = domain_validator.validate_domain_ownership(
+                custom_domain
+            )
+            if ownership_validation_result.success:
                 flash(
                     "Domain ownership is verified. Please proceed to the other records setup",
                     "success",
                 )
-                custom_domain.ownership_verified = True
-                Session.commit()
                 return redirect(
                     url_for(
                         "dashboard.domain_detail_dns",
@@ -78,36 +66,28 @@ def domain_detail_dns(custom_domain_id):
             else:
                 flash("We can't find the needed TXT record", "error")
                 ownership_ok = False
-                ownership_errors = txt_records
+                ownership_errors = ownership_validation_result.errors
 
         elif request.form.get("form-name") == "check-mx":
-            mx_domains = get_mx_domains(custom_domain.domain)
-
-            if not is_mx_equivalent(mx_domains, EMAIL_SERVERS_WITH_PRIORITY):
-                flash("The MX record is not correctly set", "warning")
-
-                mx_ok = False
-                # build mx_errors to show to user
-                mx_errors = [
-                    f"{priority} {domain}" for (priority, domain) in mx_domains
-                ]
-            else:
+            mx_validation_result = domain_validator.validate_mx_records(custom_domain)
+            if mx_validation_result.success:
                 flash(
                     "Your domain can start receiving emails. You can now use it to create alias",
                     "success",
                 )
-                custom_domain.verified = True
-                Session.commit()
                 return redirect(
                     url_for(
                         "dashboard.domain_detail_dns", custom_domain_id=custom_domain.id
                     )
                 )
+            else:
+                flash("The MX record is not correctly set", "warning")
+                mx_ok = False
+                mx_errors = mx_validation_result.errors
+
         elif request.form.get("form-name") == "check-spf":
-            spf_domains = get_spf_domain(custom_domain.domain)
-            if EMAIL_DOMAIN in spf_domains:
-                custom_domain.spf_verified = True
-                Session.commit()
+            spf_validation_result = domain_validator.validate_spf_records(custom_domain)
+            if spf_validation_result.success:
                 flash("SPF is setup correctly", "success")
                 return redirect(
                     url_for(
@@ -115,14 +95,12 @@ def domain_detail_dns(custom_domain_id):
                     )
                 )
             else:
-                custom_domain.spf_verified = False
-                Session.commit()
                 flash(
                     f"SPF: {EMAIL_DOMAIN} is not included in your SPF record.",
                     "warning",
                 )
                 spf_ok = False
-                spf_errors = get_txt_record(custom_domain.domain)
+                spf_errors = spf_validation_result.errors
 
         elif request.form.get("form-name") == "check-dkim":
             dkim_errors = domain_validator.validate_dkim_records(custom_domain)
@@ -138,10 +116,10 @@ def domain_detail_dns(custom_domain_id):
                 flash("DKIM: the CNAME record is not correctly set", "warning")
 
         elif request.form.get("form-name") == "check-dmarc":
-            txt_records = get_txt_record("_dmarc." + custom_domain.domain)
-            if dmarc_record in txt_records:
-                custom_domain.dmarc_verified = True
-                Session.commit()
+            dmarc_validation_result = domain_validator.validate_dmarc_records(
+                custom_domain
+            )
+            if dmarc_validation_result.success:
                 flash("DMARC is setup correctly", "success")
                 return redirect(
                     url_for(
@@ -149,19 +127,23 @@ def domain_detail_dns(custom_domain_id):
                     )
                 )
             else:
-                custom_domain.dmarc_verified = False
-                Session.commit()
                 flash(
                     "DMARC: The TXT record is not correctly set",
                     "warning",
                 )
                 dmarc_ok = False
-                dmarc_errors = txt_records
+                dmarc_errors = dmarc_validation_result.errors
 
     return render_template(
         "dashboard/domain_detail/dns.html",
         EMAIL_SERVERS_WITH_PRIORITY=EMAIL_SERVERS_WITH_PRIORITY,
-        dkim_records=domain_validator.get_dkim_records(),
+        ownership_records=domain_validator.get_ownership_verification_record(
+            custom_domain
+        ),
+        expected_mx_records=domain_validator.get_expected_mx_records(custom_domain),
+        dkim_records=domain_validator.get_dkim_records(custom_domain),
+        spf_record=domain_validator.get_expected_spf_record(custom_domain),
+        dmarc_record=DMARC_RECORD,
         **locals(),
     )
 
@@ -183,6 +165,11 @@ def domain_detail(custom_domain_id):
             return redirect(request.url)
         if request.form.get("form-name") == "switch-catch-all":
             custom_domain.catch_all = not custom_domain.catch_all
+            emit_user_audit_log(
+                user=current_user,
+                action=UserAuditLogAction.UpdateCustomDomain,
+                message=f"Switched custom domain {custom_domain.id} ({custom_domain.domain}) catch all to {custom_domain.catch_all}",
+            )
             Session.commit()
 
             if custom_domain.catch_all:
@@ -201,6 +188,11 @@ def domain_detail(custom_domain_id):
         elif request.form.get("form-name") == "set-name":
             if request.form.get("action") == "save":
                 custom_domain.name = request.form.get("alias-name").replace("\n", "")
+                emit_user_audit_log(
+                    user=current_user,
+                    action=UserAuditLogAction.UpdateCustomDomain,
+                    message=f"Switched custom domain {custom_domain.id} ({custom_domain.domain}) name",
+                )
                 Session.commit()
                 flash(
                     f"Default alias name for Domain {custom_domain.domain} has been set",
@@ -208,6 +200,11 @@ def domain_detail(custom_domain_id):
                 )
             else:
                 custom_domain.name = None
+                emit_user_audit_log(
+                    user=current_user,
+                    action=UserAuditLogAction.UpdateCustomDomain,
+                    message=f"Cleared custom domain {custom_domain.id} ({custom_domain.domain}) name",
+                )
                 Session.commit()
                 flash(
                     f"Default alias name for Domain {custom_domain.domain} has been removed",
@@ -221,6 +218,11 @@ def domain_detail(custom_domain_id):
             custom_domain.random_prefix_generation = (
                 not custom_domain.random_prefix_generation
             )
+            emit_user_audit_log(
+                user=current_user,
+                action=UserAuditLogAction.UpdateCustomDomain,
+                message=f"Switched custom domain {custom_domain.id} ({custom_domain.domain}) random prefix generation to {custom_domain.random_prefix_generation}",
+            )
             Session.commit()
 
             if custom_domain.random_prefix_generation:
@@ -238,40 +240,16 @@ def domain_detail(custom_domain_id):
             )
         elif request.form.get("form-name") == "update":
             mailbox_ids = request.form.getlist("mailbox_ids")
-            # check if mailbox is not tempered with
-            mailboxes = []
-            for mailbox_id in mailbox_ids:
-                mailbox = Mailbox.get(mailbox_id)
-                if (
-                    not mailbox
-                    or mailbox.user_id != current_user.id
-                    or not mailbox.verified
-                ):
-                    flash("Something went wrong, please retry", "warning")
-                    return redirect(
-                        url_for(
-                            "dashboard.domain_detail", custom_domain_id=custom_domain.id
-                        )
-                    )
-                mailboxes.append(mailbox)
+            result = set_custom_domain_mailboxes(
+                user_id=current_user.id,
+                custom_domain=custom_domain,
+                mailbox_ids=mailbox_ids,
+            )
 
-            if not mailboxes:
-                flash("You must select at least 1 mailbox", "warning")
-                return redirect(
-                    url_for(
-                        "dashboard.domain_detail", custom_domain_id=custom_domain.id
-                    )
-                )
-
-            # first remove all existing domain-mailboxes links
-            DomainMailbox.filter_by(domain_id=custom_domain.id).delete()
-            Session.flush()
-
-            for mailbox in mailboxes:
-                DomainMailbox.create(domain_id=custom_domain.id, mailbox_id=mailbox.id)
-
-            Session.commit()
-            flash(f"{custom_domain.domain} mailboxes has been updated", "success")
+            if result.success:
+                flash(f"{custom_domain.domain} mailboxes has been updated", "success")
+            else:
+                flash(result.reason.value, "warning")
 
             return redirect(
                 url_for("dashboard.domain_detail", custom_domain_id=custom_domain.id)
@@ -279,16 +257,8 @@ def domain_detail(custom_domain_id):
 
         elif request.form.get("form-name") == "delete":
             name = custom_domain.domain
-            LOG.d("Schedule deleting %s", custom_domain)
 
-            # Schedule delete domain job
-            LOG.w("schedule delete domain job for %s", custom_domain)
-            Job.create(
-                name=JOB_DELETE_DOMAIN,
-                payload={"custom_domain_id": custom_domain.id},
-                run_at=arrow.now(),
-                commit=True,
-            )
+            delete_custom_domain(custom_domain)
 
             flash(
                 f"{name} scheduled for deletion."

app/app/dashboard/views/enter_sudo.py

@@ -11,10 +11,10 @@ from app.dashboard.base import dashboard_bp
 from app.extensions import limiter
 from app.log import LOG
 from app.models import PartnerUser, SocialAuth
-from app.proton.utils import get_proton_partner
+from app.proton.proton_partner import get_proton_partner
 from app.utils import sanitize_next_url
 
-_SUDO_GAP = 900
+_SUDO_GAP = 120
 
 
 class LoginForm(FlaskForm):

app/app/dashboard/views/index.py

@@ -12,6 +12,7 @@ from app.extensions import limiter
 from app.log import LOG
 from app.models import (
     Alias,
+    AliasDeleteReason,
     AliasGeneratorEnum,
     User,
     EmailLog,
@@ -70,7 +71,10 @@ def index():
 
     page = 0
     if request.args.get("page"):
-        page = int(request.args.get("page"))
+        try:
+            page = int(request.args.get("page"))
+        except ValueError:
+            pass
 
     highlight_alias_id = None
     if request.args.get("highlight_alias_id"):
@@ -141,12 +145,16 @@ def index():
                 )
 
             if request.form.get("form-name") == "delete-alias":
-                LOG.d("delete alias %s", alias)
+                LOG.i(f"User {current_user} requested deletion of alias {alias}")
                 email = alias.email
-                alias_utils.delete_alias(alias, current_user)
+                alias_utils.delete_alias(
+                    alias, current_user, AliasDeleteReason.ManualAction, commit=True
+                )
                 flash(f"Alias {email} has been deleted", "success")
             elif request.form.get("form-name") == "disable-alias":
-                alias.enabled = False
+                alias_utils.change_alias_status(
+                    alias, enabled=False, message="Set enabled=False from dashboard"
+                )
                 Session.commit()
                 flash(f"Alias {alias.email} has been disabled", "success")
 

app/app/dashboard/views/lifetime_licence.py

@@ -3,11 +3,9 @@ from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
 from wtforms import StringField, validators
 
-from app.config import ADMIN_EMAIL
+from app import parallel_limiter
+from app.coupon_utils import redeem_lifetime_coupon
 from app.dashboard.base import dashboard_bp
-from app.db import Session
-from app.email_utils import send_email
-from app.models import LifetimeCoupon
 
 
 class CouponForm(FlaskForm):
@@ -16,6 +14,7 @@ class CouponForm(FlaskForm):
 
 @dashboard_bp.route("/lifetime_licence", methods=["GET", "POST"])
 @login_required
+@parallel_limiter.lock()
 def lifetime_licence():
     if current_user.lifetime:
         flash("You already have a lifetime licence", "warning")
@@ -32,28 +31,12 @@ def lifetime_licence():
 
     if coupon_form.validate_on_submit():
         code = coupon_form.code.data
-
-        coupon: LifetimeCoupon = LifetimeCoupon.get_by(code=code)
-        if coupon and coupon.nb_used > 0:
-            coupon.nb_used -= 1
-            current_user.lifetime = True
-            current_user.lifetime_coupon_id = coupon.id
-            if coupon.paid:
-                current_user.paid_lifetime = True
-            Session.commit()
-
-            # notify admin
-            send_email(
-                ADMIN_EMAIL,
-                subject=f"User {current_user} used lifetime coupon({coupon.comment}). Coupon nb_used: {coupon.nb_used}",
-                plaintext="",
-                html="",
-            )
-
+        coupon = redeem_lifetime_coupon(code, current_user)
+        if coupon:
             flash("You are upgraded to lifetime premium!", "success")
             return redirect(url_for("dashboard.index"))
 
         else:
-            flash(f"Code *{code}* expired or invalid", "warning")
+            flash("Coupon code expired or invalid", "warning")
 
     return render_template("dashboard/lifetime_licence.html", coupon_form=coupon_form)

app/app/dashboard/views/mailbox.py

@@ -1,8 +1,8 @@
 import base64
 import binascii
 import json
+from typing import Optional
 
-import arrow
 from flask import render_template, request, redirect, url_for, flash
 from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
@@ -10,19 +10,13 @@ from itsdangerous import TimestampSigner
 from wtforms import validators, IntegerField
 from wtforms.fields.html5 import EmailField
 
-from app import parallel_limiter
-from app.config import MAILBOX_SECRET, URL, JOB_DELETE_MAILBOX
+from app import parallel_limiter, mailbox_utils, user_settings
+from app.config import MAILBOX_SECRET
 from app.dashboard.base import dashboard_bp
 from app.db import Session
-from app.email_utils import (
-    email_can_be_used_as_mailbox,
-    mailbox_already_used,
-    render,
-    send_email,
-)
-from app.email_validation import is_valid_email
 from app.log import LOG
-from app.models import Mailbox, Job
+from app.models import Mailbox
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 from app.utils import CSRFValidationForm
 
 
@@ -58,120 +52,61 @@ def mailbox_route():
             if not delete_mailbox_form.validate():
                 flash("Invalid request", "warning")
                 return redirect(request.url)
-            mailbox = Mailbox.get(delete_mailbox_form.mailbox_id.data)
-
-            if not mailbox or mailbox.user_id != current_user.id:
-                flash("Invalid mailbox. Refresh the page", "warning")
+            try:
+                mailbox = mailbox_utils.delete_mailbox(
+                    current_user,
+                    delete_mailbox_form.mailbox_id.data,
+                    delete_mailbox_form.transfer_mailbox_id.data,
+                )
+            except mailbox_utils.MailboxError as e:
+                flash(e.msg, "warning")
                 return redirect(url_for("dashboard.mailbox_route"))
-
-            if mailbox.id == current_user.default_mailbox_id:
-                flash("You cannot delete default mailbox", "error")
-                return redirect(url_for("dashboard.mailbox_route"))
-
-            transfer_mailbox_id = delete_mailbox_form.transfer_mailbox_id.data
-            if transfer_mailbox_id and transfer_mailbox_id > 0:
-                transfer_mailbox = Mailbox.get(transfer_mailbox_id)
-
-                if not transfer_mailbox or transfer_mailbox.user_id != current_user.id:
-                    flash(
-                        "You must transfer the aliases to a mailbox you own.", "error"
-                    )
-                    return redirect(url_for("dashboard.mailbox_route"))
-
-                if transfer_mailbox.id == mailbox.id:
-                    flash(
-                        "You can not transfer the aliases to the mailbox you want to delete.",
-                        "error",
-                    )
-                    return redirect(url_for("dashboard.mailbox_route"))
-
-                if not transfer_mailbox.verified:
-                    flash("Your new mailbox is not verified", "error")
-                    return redirect(url_for("dashboard.mailbox_route"))
-
-            # Schedule delete account job
-            LOG.w(
-                f"schedule delete mailbox job for {mailbox.id} with transfer to mailbox {transfer_mailbox_id}"
-            )
-            Job.create(
-                name=JOB_DELETE_MAILBOX,
-                payload={
-                    "mailbox_id": mailbox.id,
-                    "transfer_mailbox_id": transfer_mailbox_id
-                    if transfer_mailbox_id > 0
-                    else None,
-                },
-                run_at=arrow.now(),
-                commit=True,
-            )
-
             flash(
                 f"Mailbox {mailbox.email} scheduled for deletion."
                 f"You will receive a confirmation email when the deletion is finished",
                 "success",
             )
-
             return redirect(url_for("dashboard.mailbox_route"))
+
         if request.form.get("form-name") == "set-default":
             if not csrf_form.validate():
                 flash("Invalid request", "warning")
                 return redirect(request.url)
-            mailbox_id = request.form.get("mailbox_id")
-            mailbox = Mailbox.get(mailbox_id)
-
-            if not mailbox or mailbox.user_id != current_user.id:
-                flash("Unknown error. Refresh the page", "warning")
+            try:
+                mailbox_id = request.form.get("mailbox_id")
+                mailbox = user_settings.set_default_mailbox(current_user, mailbox_id)
+            except user_settings.CannotSetMailbox as e:
+                flash(e.msg, "warning")
                 return redirect(url_for("dashboard.mailbox_route"))
 
-            if mailbox.id == current_user.default_mailbox_id:
-                flash("This mailbox is already default one", "error")
-                return redirect(url_for("dashboard.mailbox_route"))
-
-            if not mailbox.verified:
-                flash("Cannot set unverified mailbox as default", "error")
-                return redirect(url_for("dashboard.mailbox_route"))
-
-            current_user.default_mailbox_id = mailbox.id
-            Session.commit()
             flash(f"Mailbox {mailbox.email} is set as Default Mailbox", "success")
 
             return redirect(url_for("dashboard.mailbox_route"))
 
         elif request.form.get("form-name") == "create":
-            if not current_user.is_premium():
-                flash("Only premium plan can add additional mailbox", "warning")
+            if not new_mailbox_form.validate():
+                flash("Invalid request", "warning")
+                return redirect(request.url)
+            mailbox_email = new_mailbox_form.email.data.lower().strip().replace(" ", "")
+            try:
+                mailbox = mailbox_utils.create_mailbox(
+                    current_user, mailbox_email
+                ).mailbox
+            except mailbox_utils.MailboxError as e:
+                flash(e.msg, "warning")
                 return redirect(url_for("dashboard.mailbox_route"))
 
-            if new_mailbox_form.validate():
-                mailbox_email = (
-                    new_mailbox_form.email.data.lower().strip().replace(" ", "")
+            flash(
+                f"You are going to receive an email to confirm {mailbox.email}.",
+                "success",
+            )
+
+            return redirect(
+                url_for(
+                    "dashboard.mailbox_detail_route",
+                    mailbox_id=mailbox.id,
                 )
-
-                if not is_valid_email(mailbox_email):
-                    flash(f"{mailbox_email} invalid", "error")
-                elif mailbox_already_used(mailbox_email, current_user):
-                    flash(f"{mailbox_email} already used", "error")
-                elif not email_can_be_used_as_mailbox(mailbox_email):
-                    flash(f"You cannot use {mailbox_email}.", "error")
-                else:
-                    new_mailbox = Mailbox.create(
-                        email=mailbox_email, user_id=current_user.id
-                    )
-                    Session.commit()
-
-                    send_verification_email(current_user, new_mailbox)
-
-                    flash(
-                        f"You are going to receive an email to confirm {mailbox_email}.",
-                        "success",
-                    )
-
-                    return redirect(
-                        url_for(
-                            "dashboard.mailbox_detail_route",
-                            mailbox_id=new_mailbox.id,
-                        )
-                    )
+            )
 
     return render_template(
         "dashboard/mailbox.html",
@@ -182,34 +117,31 @@ def mailbox_route():
     )
 
 
-def send_verification_email(user, mailbox):
-    s = TimestampSigner(MAILBOX_SECRET)
-    encoded_data = json.dumps([mailbox.id, mailbox.email]).encode("utf-8")
-    b64_data = base64.urlsafe_b64encode(encoded_data)
-    mailbox_id_signed = s.sign(b64_data).decode()
-    verification_url = (
-        URL + "/dashboard/mailbox_verify" + f"?mailbox_id={mailbox_id_signed}"
-    )
-    send_email(
-        mailbox.email,
-        f"Please confirm your mailbox {mailbox.email}",
-        render(
-            "transactional/verify-mailbox.txt.jinja2",
-            user=user,
-            link=verification_url,
-            mailbox_email=mailbox.email,
-        ),
-        render(
-            "transactional/verify-mailbox.html",
-            user=user,
-            link=verification_url,
-            mailbox_email=mailbox.email,
-        ),
-    )
-
-
 @dashboard_bp.route("/mailbox_verify")
+@login_required
 def mailbox_verify():
+    mailbox_id = request.args.get("mailbox_id")
+    if not mailbox_id:
+        LOG.i("Missing mailbox_id")
+        flash("You followed an invalid link", "error")
+        return redirect(url_for("dashboard.mailbox_route"))
+
+    code = request.args.get("code")
+    if not code:
+        # Old way
+        return verify_with_signed_secret(mailbox_id)
+
+    try:
+        mailbox = mailbox_utils.verify_mailbox_code(current_user, mailbox_id, code)
+    except mailbox_utils.MailboxError as e:
+        LOG.i(f"Cannot verify mailbox {mailbox_id} because of {e}")
+        flash(f"Cannot verify mailbox: {e.msg}", "error")
+        return redirect(url_for("dashboard.mailbox_route"))
+    LOG.d("Mailbox %s is verified", mailbox)
+    return render_template("dashboard/mailbox_validation.html", mailbox=mailbox)
+
+
+def verify_with_signed_secret(request: str):
     s = TimestampSigner(MAILBOX_SECRET)
     mailbox_verify_request = request.args.get("mailbox_id")
     try:
@@ -227,7 +159,7 @@ def mailbox_verify():
         flash("Invalid link. Please delete and re-add your mailbox", "error")
         return redirect(url_for("dashboard.mailbox_route"))
     mailbox_id = mailbox_data[0]
-    mailbox = Mailbox.get(mailbox_id)
+    mailbox: Optional[Mailbox] = Mailbox.get(mailbox_id)
     if not mailbox:
         flash("Invalid link", "error")
         return redirect(url_for("dashboard.mailbox_route"))
@@ -237,6 +169,11 @@ def mailbox_verify():
         return redirect(url_for("dashboard.mailbox_route"))
 
     mailbox.verified = True
+    emit_user_audit_log(
+        user=current_user,
+        action=UserAuditLogAction.VerifyMailbox,
+        message=f"Verified mailbox {mailbox.id} ({mailbox.email})",
+    )
     Session.commit()
 
     LOG.d("Mailbox %s is verified", mailbox)

app/app/dashboard/views/mailbox_detail.py

@@ -1,34 +1,39 @@
-from smtplib import SMTPRecipientsRefused
-
 from email_validator import validate_email, EmailNotValidError
 from flask import render_template, request, redirect, url_for, flash
 from flask_login import login_required, current_user
 from flask_wtf import FlaskForm
 from itsdangerous import TimestampSigner
 from wtforms import validators
-from wtforms.fields.html5 import EmailField
+from wtforms.fields.simple import StringField
 
+from app import mailbox_utils
 from app.config import ENFORCE_SPF, MAILBOX_SECRET
-from app.config import URL
 from app.dashboard.base import dashboard_bp
+from app.dashboard.views.enter_sudo import sudo_required
 from app.db import Session
-from app.email_utils import email_can_be_used_as_mailbox
-from app.email_utils import mailbox_already_used, render, send_email
-from app.log import LOG
-from app.models import Alias, AuthorizedAddress
+from app.extensions import limiter
+from app.mailbox_utils import (
+    perform_mailbox_email_change,
+    MailboxEmailChangeError,
+    MailboxError,
+)
+from app.models import AuthorizedAddress
 from app.models import Mailbox
 from app.pgp_utils import PGPException, load_public_key_and_check
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 from app.utils import sanitize_email, CSRFValidationForm
 
 
 class ChangeEmailForm(FlaskForm):
-    email = EmailField(
+    email = StringField(
         "email", validators=[validators.DataRequired(), validators.Email()]
     )
 
 
 @dashboard_bp.route("/mailbox/<int:mailbox_id>/", methods=["GET", "POST"])
 @login_required
+@sudo_required
+@limiter.limit("20/minute", methods=["POST"])
 def mailbox_detail_route(mailbox_id):
     mailbox: Mailbox = Mailbox.get(mailbox_id)
     if not mailbox or mailbox.user_id != current_user.id:
@@ -51,41 +56,30 @@ def mailbox_detail_route(mailbox_id):
             request.form.get("form-name") == "update-email"
             and change_email_form.validate_on_submit()
         ):
-            new_email = sanitize_email(change_email_form.email.data)
-            if new_email != mailbox.email and not pending_email:
-                # check if this email is not already used
-                if mailbox_already_used(new_email, current_user) or Alias.get_by(
-                    email=new_email
-                ):
-                    flash(f"Email {new_email} already used", "error")
-                elif not email_can_be_used_as_mailbox(new_email):
-                    flash("You cannot use this email address as your mailbox", "error")
-                else:
-                    mailbox.new_email = new_email
-                    Session.commit()
-
-                    try:
-                        verify_mailbox_change(current_user, mailbox, new_email)
-                    except SMTPRecipientsRefused:
-                        flash(
-                            f"Incorrect mailbox, please recheck {mailbox.email}",
-                            "error",
-                        )
-                    else:
-                        flash(
-                            f"You are going to receive an email to confirm {new_email}.",
-                            "success",
-                        )
-                    return redirect(
-                        url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
-                    )
+            try:
+                response = mailbox_utils.request_mailbox_email_change(
+                    current_user, mailbox, change_email_form.email.data
+                )
+                flash(
+                    f"You are going to receive an email to confirm {mailbox.email}.",
+                    "success",
+                )
+            except mailbox_utils.MailboxError as e:
+                flash(e.msg, "error")
+            return redirect(
+                url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
+            )
         elif request.form.get("form-name") == "force-spf":
             if not ENFORCE_SPF:
                 flash("SPF enforcement globally not enabled", "error")
                 return redirect(url_for("dashboard.index"))
 
-            mailbox.force_spf = (
-                True if request.form.get("spf-status") == "on" else False
+            force_spf_value = request.form.get("spf-status") == "on"
+            mailbox.force_spf = force_spf_value
+            emit_user_audit_log(
+                user=current_user,
+                action=UserAuditLogAction.UpdateMailbox,
+                message=f"Set force_spf to {force_spf_value} on mailbox {mailbox_id} ({mailbox.email})",
             )
             Session.commit()
             flash(
@@ -109,6 +103,11 @@ def mailbox_detail_route(mailbox_id):
                 if AuthorizedAddress.get_by(mailbox_id=mailbox.id, email=address):
                     flash(f"{address} already added", "error")
                 else:
+                    emit_user_audit_log(
+                        user=current_user,
+                        action=UserAuditLogAction.UpdateMailbox,
+                        message=f"Add authorized address {address} to mailbox {mailbox_id} ({mailbox.email})",
+                    )
                     AuthorizedAddress.create(
                         user_id=current_user.id,
                         mailbox_id=mailbox.id,
@@ -129,6 +128,11 @@ def mailbox_detail_route(mailbox_id):
                 flash("Unknown error. Refresh the page", "warning")
             else:
                 address = authorized_address.email
+                emit_user_audit_log(
+                    user=current_user,
+                    action=UserAuditLogAction.UpdateMailbox,
+                    message=f"Remove authorized address {address} from mailbox {mailbox_id} ({mailbox.email})",
+                )
                 AuthorizedAddress.delete(authorized_address_id)
                 Session.commit()
                 flash(f"{address} has been deleted", "success")
@@ -161,6 +165,11 @@ def mailbox_detail_route(mailbox_id):
                 except PGPException:
                     flash("Cannot add the public key, please verify it", "error")
                 else:
+                    emit_user_audit_log(
+                        user=current_user,
+                        action=UserAuditLogAction.UpdateMailbox,
+                        message=f"Add PGP Key {mailbox.pgp_finger_print} to mailbox {mailbox_id} ({mailbox.email})",
+                    )
                     Session.commit()
                     flash("Your PGP public key is saved successfully", "success")
                     return redirect(
@@ -168,6 +177,11 @@ def mailbox_detail_route(mailbox_id):
                     )
             elif request.form.get("action") == "remove":
                 # Free user can decide to remove their added PGP key
+                emit_user_audit_log(
+                    user=current_user,
+                    action=UserAuditLogAction.UpdateMailbox,
+                    message=f"Remove PGP Key {mailbox.pgp_finger_print} from mailbox {mailbox_id} ({mailbox.email})",
+                )
                 mailbox.pgp_public_key = None
                 mailbox.pgp_finger_print = None
                 mailbox.disable_pgp = False
@@ -179,10 +193,27 @@ def mailbox_detail_route(mailbox_id):
 
         elif request.form.get("form-name") == "toggle-pgp":
             if request.form.get("pgp-enabled") == "on":
-                mailbox.disable_pgp = False
-                flash(f"PGP is enabled on {mailbox.email}", "success")
+                if mailbox.is_proton():
+                    mailbox.disable_pgp = True
+                    flash(
+                        "Enabling PGP for a Proton Mail mailbox is redundant and does not add any security benefit",
+                        "info",
+                    )
+                else:
+                    mailbox.disable_pgp = False
+                    emit_user_audit_log(
+                        user=current_user,
+                        action=UserAuditLogAction.UpdateMailbox,
+                        message=f"Enabled PGP for mailbox {mailbox_id} ({mailbox.email})",
+                    )
+                    flash(f"PGP is enabled on {mailbox.email}", "info")
             else:
                 mailbox.disable_pgp = True
+                emit_user_audit_log(
+                    user=current_user,
+                    action=UserAuditLogAction.UpdateMailbox,
+                    message=f"Disabled PGP for mailbox {mailbox_id} ({mailbox.email})",
+                )
                 flash(f"PGP is disabled on {mailbox.email}", "info")
 
             Session.commit()
@@ -192,6 +223,11 @@ def mailbox_detail_route(mailbox_id):
         elif request.form.get("form-name") == "generic-subject":
             if request.form.get("action") == "save":
                 mailbox.generic_subject = request.form.get("generic-subject")
+                emit_user_audit_log(
+                    user=current_user,
+                    action=UserAuditLogAction.UpdateMailbox,
+                    message=f"Set generic subject for mailbox {mailbox_id} ({mailbox.email})",
+                )
                 Session.commit()
                 flash("Generic subject is enabled", "success")
                 return redirect(
@@ -199,6 +235,11 @@ def mailbox_detail_route(mailbox_id):
                 )
             elif request.form.get("action") == "remove":
                 mailbox.generic_subject = None
+                emit_user_audit_log(
+                    user=current_user,
+                    action=UserAuditLogAction.UpdateMailbox,
+                    message=f"Remove generic subject for mailbox {mailbox_id} ({mailbox.email})",
+                )
                 Session.commit()
                 flash("Generic subject is disabled", "success")
                 return redirect(
@@ -209,91 +250,57 @@ def mailbox_detail_route(mailbox_id):
     return render_template("dashboard/mailbox_detail.html", **locals())
 
 
-def verify_mailbox_change(user, mailbox, new_email):
-    s = TimestampSigner(MAILBOX_SECRET)
-    mailbox_id_signed = s.sign(str(mailbox.id)).decode()
-    verification_url = (
-        f"{URL}/dashboard/mailbox/confirm_change?mailbox_id={mailbox_id_signed}"
-    )
-
-    send_email(
-        new_email,
-        "Confirm mailbox change on SimpleLogin",
-        render(
-            "transactional/verify-mailbox-change.txt.jinja2",
-            user=user,
-            link=verification_url,
-            mailbox_email=mailbox.email,
-            mailbox_new_email=new_email,
-        ),
-        render(
-            "transactional/verify-mailbox-change.html",
-            user=user,
-            link=verification_url,
-            mailbox_email=mailbox.email,
-            mailbox_new_email=new_email,
-        ),
-    )
-
-
 @dashboard_bp.route(
     "/mailbox/<int:mailbox_id>/cancel_email_change", methods=["GET", "POST"]
 )
 @login_required
 def cancel_mailbox_change_route(mailbox_id):
-    mailbox = Mailbox.get(mailbox_id)
-    if not mailbox or mailbox.user_id != current_user.id:
-        flash("You cannot see this page", "warning")
-        return redirect(url_for("dashboard.index"))
-
-    if mailbox.new_email:
-        mailbox.new_email = None
-        Session.commit()
+    try:
+        mailbox_utils.cancel_email_change(mailbox_id, current_user)
         flash("Your mailbox change is cancelled", "success")
         return redirect(
             url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
         )
-    else:
-        flash("You have no pending mailbox change", "warning")
-        return redirect(
-            url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
-        )
+    except MailboxError as e:
+        flash(e.msg, "warning")
+        return redirect(url_for("dashboard.index"))
 
 
 @dashboard_bp.route("/mailbox/confirm_change")
-def mailbox_confirm_change_route():
-    s = TimestampSigner(MAILBOX_SECRET)
-    signed_mailbox_id = request.args.get("mailbox_id")
+@login_required
+@limiter.limit("3/minute")
+def mailbox_confirm_email_change_route():
+    mailbox_id = request.args.get("mailbox_id")
 
-    try:
-        mailbox_id = int(s.unsign(signed_mailbox_id, max_age=900))
-    except Exception:
-        flash("Invalid link", "error")
-        return redirect(url_for("dashboard.index"))
-    else:
-        mailbox = Mailbox.get(mailbox_id)
-
-        # new_email can be None if user cancels change in the meantime
-        if mailbox and mailbox.new_email:
-            user = mailbox.user
-            if Mailbox.get_by(email=mailbox.new_email, user_id=user.id):
-                flash(f"{mailbox.new_email} is already used", "error")
-                return redirect(
-                    url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox.id)
-                )
-
-            mailbox.email = mailbox.new_email
-            mailbox.new_email = None
-
-            # mark mailbox as verified if the change request is sent from an unverified mailbox
-            mailbox.verified = True
-            Session.commit()
-
-            LOG.d("Mailbox change %s is verified", mailbox)
-            flash(f"The {mailbox.email} is updated", "success")
+    code = request.args.get("code")
+    if code:
+        try:
+            mailbox = mailbox_utils.verify_mailbox_code(current_user, mailbox_id, code)
+            flash("Successfully changed mailbox email", "success")
             return redirect(
                 url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox.id)
             )
-        else:
+        except mailbox_utils.MailboxError as e:
+            flash(f"Cannot verify mailbox: {e.msg}", "error")
+            return redirect(url_for("dashboard.mailbox_route"))
+    else:
+        s = TimestampSigner(MAILBOX_SECRET)
+        try:
+            mailbox_id = int(s.unsign(mailbox_id, max_age=900))
+            res = perform_mailbox_email_change(mailbox_id)
+            flash(res.message, res.message_category)
+            if res.error:
+                if res.error == MailboxEmailChangeError.EmailAlreadyUsed:
+                    return redirect(
+                        url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id)
+                    )
+                elif res.error == MailboxEmailChangeError.InvalidId:
+                    return redirect(url_for("dashboard.index"))
+                else:
+                    raise Exception("Unhandled MailboxEmailChangeError")
+        except Exception:
             flash("Invalid link", "error")
             return redirect(url_for("dashboard.index"))
+
+    flash("Successfully changed mailbox email", "success")
+    return redirect(url_for("dashboard.mailbox_detail_route", mailbox_id=mailbox_id))

app/app/dashboard/views/notification.py

@@ -43,7 +43,10 @@ def notification_route(notification_id):
 def notifications_route():
     page = 0
     if request.args.get("page"):
-        page = int(request.args.get("page"))
+        try:
+            page = int(request.args.get("page"))
+        except ValueError:
+            pass
 
     notifications = (
         Notification.filter_by(user_id=current_user.id)

app/app/dashboard/views/pricing.py

@@ -22,7 +22,7 @@ from app.models import (
     PartnerUser,
     PartnerSubscription,
 )
-from app.proton.utils import get_proton_partner
+from app.proton.proton_partner import get_proton_partner
 
 
 @dashboard_bp.route("/pricing", methods=["GET", "POST"])

app/app/dashboard/views/setting.py

@@ -14,7 +14,7 @@ from flask_wtf import FlaskForm
 from flask_wtf.file import FileField
 from wtforms import StringField, validators
 
-from app import s3
+from app import s3, user_settings
 from app.config import (
     FIRST_ALIAS_DOMAIN,
     ALIAS_RANDOM_SUFFIX_LENGTH,
@@ -31,19 +31,18 @@ from app.models import (
     PlanEnum,
     File,
     EmailChange,
-    CustomDomain,
     AliasGeneratorEnum,
     AliasSuffixEnum,
     ManualSubscription,
     SenderFormatEnum,
-    SLDomain,
     CoinbaseSubscription,
     AppleSubscription,
     PartnerUser,
     PartnerSubscription,
     UnsubscribeBehaviourEnum,
 )
-from app.proton.utils import get_proton_partner
+from app.proton.proton_partner import get_proton_partner
+from app.proton.proton_unlink import can_unlink_proton_account
 from app.utils import (
     random_string,
     CSRFValidationForm,
@@ -166,44 +165,22 @@ def setting():
             return redirect(url_for("dashboard.setting"))
         elif request.form.get("form-name") == "change-random-alias-default-domain":
             default_domain = request.form.get("random-alias-default-domain")
-
-            if default_domain:
-                sl_domain: SLDomain = SLDomain.get_by(domain=default_domain)
-                if sl_domain:
-                    if sl_domain.premium_only and not current_user.is_premium():
-                        flash("You cannot use this domain", "error")
-                        return redirect(url_for("dashboard.setting"))
-
-                    current_user.default_alias_public_domain_id = sl_domain.id
-                    current_user.default_alias_custom_domain_id = None
-                else:
-                    custom_domain = CustomDomain.get_by(domain=default_domain)
-                    if custom_domain:
-                        # sanity check
-                        if (
-                            custom_domain.user_id != current_user.id
-                            or not custom_domain.verified
-                        ):
-                            LOG.w(
-                                "%s cannot use domain %s", current_user, custom_domain
-                            )
-                            flash(f"Domain {default_domain} can't be used", "error")
-                            return redirect(request.url)
-                        else:
-                            current_user.default_alias_custom_domain_id = (
-                                custom_domain.id
-                            )
-                            current_user.default_alias_public_domain_id = None
-
-            else:
-                current_user.default_alias_custom_domain_id = None
-                current_user.default_alias_public_domain_id = None
+            try:
+                user_settings.set_default_alias_domain(current_user, default_domain)
+            except user_settings.CannotSetAlias as e:
+                flash(e.msg, "error")
+                return redirect(url_for("dashboard.setting"))
 
             Session.commit()
             flash("Your preference has been updated", "success")
             return redirect(url_for("dashboard.setting"))
         elif request.form.get("form-name") == "random-alias-suffix":
-            scheme = int(request.form.get("random-alias-suffix-generator"))
+            try:
+                scheme = int(request.form.get("random-alias-suffix-generator"))
+            except ValueError:
+                flash("Invalid value", "error")
+                return redirect(url_for("dashboard.setting"))
+
             if AliasSuffixEnum.has_value(scheme):
                 current_user.random_alias_suffix = scheme
                 Session.commit()
@@ -227,6 +204,21 @@ def setting():
             Session.commit()
             flash("Your preference has been updated", "success")
             return redirect(url_for("dashboard.setting"))
+        elif request.form.get("form-name") == "enable_data_breach_check":
+            if not current_user.is_premium():
+                flash("Only premium plan can enable data breach monitoring", "warning")
+                return redirect(url_for("dashboard.setting"))
+            choose = request.form.get("enable_data_breach_check")
+            if choose == "on":
+                LOG.i("User {current_user} has enabled data breach monitoring")
+                current_user.enable_data_breach_check = True
+                flash("Data breach monitoring is enabled", "success")
+            else:
+                LOG.i("User {current_user} has disabled data breach monitoring")
+                current_user.enable_data_breach_check = False
+                flash("Data breach monitoring is disabled", "info")
+            Session.commit()
+            return redirect(url_for("dashboard.setting"))
         elif request.form.get("form-name") == "sender-in-ra":
             choose = request.form.get("enable")
             if choose == "on":
@@ -332,4 +324,5 @@ def setting():
         ALIAS_RAND_SUFFIX_LENGTH=ALIAS_RANDOM_SUFFIX_LENGTH,
         connect_with_proton=CONNECT_WITH_PROTON,
         proton_linked_account=proton_linked_account,
+        can_unlink_proton_account=can_unlink_proton_account(current_user),
     )

app/app/dashboard/views/subdomain.py

@@ -11,6 +11,7 @@ from app.dashboard.base import dashboard_bp
 from app.errors import SubdomainInTrashError
 from app.log import LOG
 from app.models import CustomDomain, Mailbox, SLDomain
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 
 # Only lowercase letters, numbers, dashes (-)  are currently supported
 _SUBDOMAIN_PATTERN = r"[0-9a-z-]{1,}"
@@ -102,6 +103,12 @@ def subdomain_route():
                         ownership_verified=True,
                         commit=True,
                     )
+                    emit_user_audit_log(
+                        user=current_user,
+                        action=UserAuditLogAction.CreateCustomDomain,
+                        message=f"Create subdomain {new_custom_domain.id} ({full_domain})",
+                        commit=True,
+                    )
                 except SubdomainInTrashError:
                     flash(
                         f"{full_domain} has been used before and cannot be reused",

app/app/dashboard/views/unsubscribe.py

@@ -8,6 +8,7 @@ from app.db import Session
 from flask import redirect, url_for, flash, request, render_template
 from flask_login import login_required, current_user
 
+from app import alias_utils
 from app.dashboard.base import dashboard_bp
 from app.handler.unsubscribe_encoder import UnsubscribeAction
 from app.handler.unsubscribe_handler import UnsubscribeHandler
@@ -31,7 +32,9 @@ def unsubscribe(alias_id):
 
     # automatic unsubscribe, according to https://tools.ietf.org/html/rfc8058
     if request.method == "POST":
-        alias.enabled = False
+        alias_utils.change_alias_status(
+            alias, enabled=False, message="Set enabled=False from unsubscribe request"
+        )
         flash(f"Alias {alias.email} has been blocked", "success")
         Session.commit()
 

app/app/developer/views/client_detail.py

@@ -1,4 +1,5 @@
 from io import BytesIO
+from urllib.parse import urlparse
 
 from flask import request, render_template, redirect, url_for, flash
 from flask_login import current_user, login_required
@@ -11,6 +12,7 @@ from app.config import ADMIN_EMAIL
 from app.db import Session
 from app.developer.base import developer_bp
 from app.email_utils import send_email
+from app.image_validation import detect_image_format, ImageFormat
 from app.log import LOG
 from app.models import Client, RedirectUri, File, Referral
 from app.utils import random_string
@@ -46,16 +48,25 @@ def client_detail(client_id):
         approval_form.description.data = client.description
 
     if action == "edit" and form.validate_on_submit():
+        parsed_url = urlparse(form.url.data)
+        if parsed_url.scheme != "https":
+            flash("Only https urls are allowed", "error")
+            return redirect(url_for("developer.index"))
         client.name = form.name.data
         client.home_url = form.url.data
 
         if form.icon.data:
-            # todo: remove current icon if any
-            # todo: handle remove icon
+            icon_data = form.icon.data.read(10240)
+            if detect_image_format(icon_data) == ImageFormat.Unknown:
+                flash("Unknown file format", "warning")
+                return redirect(url_for("developer.index"))
+            if client.icon:
+                s3.delete(client.icon_id)
+                File.delete(client.icon)
             file_path = random_string(30)
             file = File.create(path=file_path, user_id=client.user_id)
 
-            s3.upload_from_bytesio(file_path, BytesIO(form.icon.data.read()))
+            s3.upload_from_bytesio(file_path, BytesIO(icon_data))
 
             Session.flush()
             LOG.d("upload file %s to s3", file)

app/app/developer/views/new_client.py

@@ -1,3 +1,5 @@
+from urllib.parse import urlparse
+
 from flask import render_template, redirect, url_for, flash
 from flask_login import current_user, login_required
 from flask_wtf import FlaskForm
@@ -20,6 +22,10 @@ def new_client():
 
     if form.validate_on_submit():
         client = Client.create_new(form.name.data, current_user.id)
+        parsed_url = urlparse(form.url.data)
+        if parsed_url.scheme != "https":
+            flash("Only https urls are allowed", "error")
+            return redirect(url_for("developer.new_client"))
         client.home_url = form.url.data
         Session.commit()
 

app/app/dns_utils.py

@@ -1,120 +1,134 @@
-from app import config
-from typing import Optional, List, Tuple
+from abc import ABC, abstractmethod
+from typing import List, Optional
 
 import dns.resolver
 
-
-def _get_dns_resolver():
-    my_resolver = dns.resolver.Resolver()
-    my_resolver.nameservers = config.NAMESERVERS
-
-    return my_resolver
-
-
-def get_ns(hostname) -> [str]:
-    try:
-        answers = _get_dns_resolver().resolve(hostname, "NS", search=True)
-    except Exception:
-        return []
-    return [a.to_text() for a in answers]
-
-
-def get_cname_record(hostname) -> Optional[str]:
-    """Return the CNAME record if exists for a domain, WITHOUT the trailing period at the end"""
-    try:
-        answers = _get_dns_resolver().resolve(hostname, "CNAME", search=True)
-    except Exception:
-        return None
-
-    for a in answers:
-        ret = a.to_text()
-        return ret[:-1]
-
-    return None
-
-
-def get_mx_domains(hostname) -> [(int, str)]:
-    """return list of (priority, domain name) sorted by priority (lowest priority first)
-    domain name ends with a "." at the end.
-    """
-    try:
-        answers = _get_dns_resolver().resolve(hostname, "MX", search=True)
-    except Exception:
-        return []
-
-    ret = []
-
-    for a in answers:
-        record = a.to_text()  # for ex '20 alt2.aspmx.l.google.com.'
-        parts = record.split(" ")
-
-        ret.append((int(parts[0]), parts[1]))
-
-    return sorted(ret, key=lambda prio_domain: prio_domain[0])
-
+from app.config import NAMESERVERS
 
 _include_spf = "include:"
 
 
-def get_spf_domain(hostname) -> [str]:
-    """return all domains listed in *include:*"""
-    try:
-        answers = _get_dns_resolver().resolve(hostname, "TXT", search=True)
-    except Exception:
-        return []
+class DNSClient(ABC):
+    @abstractmethod
+    def get_cname_record(self, hostname: str) -> Optional[str]:
+        pass
 
-    ret = []
+    @abstractmethod
+    def get_mx_domains(self, hostname: str) -> dict[int, list[str]]:
+        pass
 
-    for a in answers:  # type: dns.rdtypes.ANY.TXT.TXT
-        for record in a.strings:
-            record = record.decode()  # record is bytes
+    def get_spf_domain(self, hostname: str) -> List[str]:
+        """
+        return all domains listed in *include:*
+        """
+        try:
+            records = self.get_txt_record(hostname)
+            ret = []
+            for record in records:
+                if record.startswith("v=spf1"):
+                    parts = record.split(" ")
+                    for part in parts:
+                        if part.startswith(_include_spf):
+                            ret.append(
+                                part[part.find(_include_spf) + len(_include_spf) :]
+                            )
+            return ret
+        except Exception:
+            return []
 
-            if record.startswith("v=spf1"):
+    @abstractmethod
+    def get_txt_record(self, hostname: str) -> List[str]:
+        pass
+
+
+class NetworkDNSClient(DNSClient):
+    def __init__(self, nameservers: List[str]):
+        self._resolver = dns.resolver.Resolver()
+        self._resolver.nameservers = nameservers
+
+    def get_cname_record(self, hostname: str) -> Optional[str]:
+        """
+        Return the CNAME record if exists for a domain, WITHOUT the trailing period at the end
+        """
+        try:
+            answers = self._resolver.resolve(hostname, "CNAME", search=True)
+            for a in answers:
+                ret = a.to_text()
+                return ret[:-1]
+        except Exception:
+            return None
+
+    def get_mx_domains(self, hostname: str) -> dict[int, list[str]]:
+        """
+        return list of (priority, domain name) sorted by priority (lowest priority first)
+        domain name ends with a "." at the end.
+        """
+        ret = {}
+        try:
+            answers = self._resolver.resolve(hostname, "MX", search=True)
+            for a in answers:
+                record = a.to_text()  # for ex '20 alt2.aspmx.l.google.com.'
                 parts = record.split(" ")
-                for part in parts:
-                    if part.startswith(_include_spf):
-                        ret.append(part[part.find(_include_spf) + len(_include_spf) :])
+                prio = int(parts[0])
+                if prio not in ret:
+                    ret[prio] = []
+                ret[prio].append(parts[1])
+        except Exception:
+            pass
+        return ret
 
-    return ret
+    def get_txt_record(self, hostname: str) -> List[str]:
+        try:
+            answers = self._resolver.resolve(hostname, "TXT", search=False)
+            ret = []
+            for a in answers:  # type: dns.rdtypes.ANY.TXT.TXT
+                for record in a.strings:
+                    ret.append(record.decode())
+            return ret
+        except Exception:
+            return []
 
 
-def get_txt_record(hostname) -> [str]:
-    try:
-        answers = _get_dns_resolver().resolve(hostname, "TXT", search=True)
-    except Exception:
-        return []
+class InMemoryDNSClient(DNSClient):
+    def __init__(self):
+        self.cname_records: dict[str, Optional[str]] = {}
+        self.mx_records: dict[int, dict[int, list[str]]] = {}
+        self.spf_records: dict[str, List[str]] = {}
+        self.txt_records: dict[str, List[str]] = {}
 
-    ret = []
+    def set_cname_record(self, hostname: str, cname: str):
+        self.cname_records[hostname] = cname
 
-    for a in answers:  # type: dns.rdtypes.ANY.TXT.TXT
-        for record in a.strings:
-            record = record.decode()  # record is bytes
+    def set_mx_records(self, hostname: str, mx_list: dict[int, list[str]]):
+        self.mx_records[hostname] = mx_list
 
-            ret.append(record)
+    def set_txt_record(self, hostname: str, txt_list: List[str]):
+        self.txt_records[hostname] = txt_list
 
-    return ret
+    def get_cname_record(self, hostname: str) -> Optional[str]:
+        return self.cname_records.get(hostname)
+
+    def get_mx_domains(self, hostname: str) -> dict[int, list[str]]:
+        return self.mx_records.get(hostname, {})
+
+    def get_txt_record(self, hostname: str) -> List[str]:
+        return self.txt_records.get(hostname, [])
 
 
-def is_mx_equivalent(
-    mx_domains: List[Tuple[int, str]], ref_mx_domains: List[Tuple[int, str]]
-) -> bool:
-    """
-    Compare mx_domains with ref_mx_domains to see if they are equivalent.
-    mx_domains and ref_mx_domains are list of (priority, domain)
+global_dns_client: Optional[DNSClient] = None
 
-    The priority order is taken into account but not the priority number.
-    For example, [(1, domain1), (2, domain2)] is equivalent to [(10, domain1), (20, domain2)]
-    """
-    mx_domains = sorted(mx_domains, key=lambda priority_domain: priority_domain[0])
-    ref_mx_domains = sorted(
-        ref_mx_domains, key=lambda priority_domain: priority_domain[0]
-    )
 
-    if len(mx_domains) < len(ref_mx_domains):
-        return False
+def get_network_dns_client() -> DNSClient:
+    global global_dns_client
+    if global_dns_client is not None:
+        return global_dns_client
+    return NetworkDNSClient(NAMESERVERS)
 
-    for i in range(0, len(ref_mx_domains)):
-        if mx_domains[i][1] != ref_mx_domains[i][1]:
-            return False
 
-    return True
+def set_global_dns_client(dns_client: Optional[DNSClient]):
+    global global_dns_client
+    global_dns_client = dns_client
+
+
+def get_mx_domains(hostname: str) -> dict[int, list[str]]:
+    return get_network_dns_client().get_mx_domains(hostname)

app/app/email_utils.py

@@ -33,6 +33,7 @@ from flanker.addresslib import address
 from flanker.addresslib.address import EmailAddress
 from jinja2 import Environment, FileSystemLoader
 from sqlalchemy import func
+from flask_login import current_user
 
 from app import config
 from app.db import Session
@@ -68,17 +69,27 @@ VERP_TIME_START = 1640995200
 VERP_HMAC_ALGO = "sha3-224"
 
 
-def render(template_name, **kwargs) -> str:
+def render(template_name: str, user: Optional[User], **kwargs) -> str:
     templates_dir = os.path.join(config.ROOT_DIR, "templates", "emails")
     env = Environment(loader=FileSystemLoader(templates_dir))
 
     template = env.get_template(template_name)
 
+    if user is None:
+        if current_user and current_user.is_authenticated:
+            user = current_user
+
+    use_partner_template = False
+    if user:
+        use_partner_template = user.has_used_alias_from_partner()
+        kwargs["user"] = user
+
     return template.render(
         MAX_NB_EMAIL_FREE_PLAN=config.MAX_NB_EMAIL_FREE_PLAN,
         URL=config.URL,
         LANDING_PAGE_URL=config.LANDING_PAGE_URL,
         YEAR=arrow.now().year,
+        USE_PARTNER_TEMPLATE=use_partner_template,
         **kwargs,
     )
 
@@ -111,53 +122,59 @@ def send_trial_end_soon_email(user):
     )
 
 
-def send_activation_email(email, activation_link):
+def send_activation_email(user: User, activation_link):
     send_email(
-        email,
+        user.email,
         "Just one more step to join SimpleLogin",
         render(
             "transactional/activation.txt",
+            user=user,
             activation_link=activation_link,
-            email=email,
+            email=user.email,
         ),
         render(
             "transactional/activation.html",
+            user=user,
             activation_link=activation_link,
-            email=email,
+            email=user.email,
         ),
     )
 
 
-def send_reset_password_email(email, reset_password_link):
+def send_reset_password_email(user: User, reset_password_link):
     send_email(
-        email,
+        user.email,
         "Reset your password on SimpleLogin",
         render(
             "transactional/reset-password.txt",
+            user=user,
             reset_password_link=reset_password_link,
         ),
         render(
             "transactional/reset-password.html",
+            user=user,
             reset_password_link=reset_password_link,
         ),
     )
 
 
-def send_change_email(new_email, current_email, link):
+def send_change_email(user: User, new_email, link):
     send_email(
         new_email,
         "Confirm email update on SimpleLogin",
         render(
             "transactional/change-email.txt",
+            user=user,
             link=link,
             new_email=new_email,
-            current_email=current_email,
+            current_email=user.email,
         ),
         render(
             "transactional/change-email.html",
+            user=user,
             link=link,
             new_email=new_email,
-            current_email=current_email,
+            current_email=user.email,
         ),
     )
 
@@ -170,28 +187,32 @@ def send_invalid_totp_login_email(user, totp_type):
         "Unsuccessful attempt to login to your SimpleLogin account",
         render(
             "transactional/invalid-totp-login.txt",
+            user=user,
             type=totp_type,
         ),
         render(
             "transactional/invalid-totp-login.html",
+            user=user,
             type=totp_type,
         ),
         1,
     )
 
 
-def send_test_email_alias(email, name):
+def send_test_email_alias(user: User, email: str):
     send_email(
         email,
         f"This email is sent to {email}",
         render(
             "transactional/test-email.txt",
-            name=name,
+            user=user,
+            name=user.name,
             alias=email,
         ),
         render(
             "transactional/test-email.html",
-            name=name,
+            user=user,
+            name=user.name,
             alias=email,
         ),
     )
@@ -206,11 +227,13 @@ def send_cannot_create_directory_alias(user, alias_address, directory_name):
         f"Alias {alias_address} cannot be created",
         render(
             "transactional/cannot-create-alias-directory.txt",
+            user=user,
             alias=alias_address,
             directory=directory_name,
         ),
         render(
             "transactional/cannot-create-alias-directory.html",
+            user=user,
             alias=alias_address,
             directory=directory_name,
         ),
@@ -228,11 +251,13 @@ def send_cannot_create_directory_alias_disabled(user, alias_address, directory_n
         f"Alias {alias_address} cannot be created",
         render(
             "transactional/cannot-create-alias-directory-disabled.txt",
+            user=user,
             alias=alias_address,
             directory=directory_name,
         ),
         render(
             "transactional/cannot-create-alias-directory-disabled.html",
+            user=user,
             alias=alias_address,
             directory=directory_name,
         ),
@@ -248,11 +273,13 @@ def send_cannot_create_domain_alias(user, alias, domain):
         f"Alias {alias} cannot be created",
         render(
             "transactional/cannot-create-alias-domain.txt",
+            user=user,
             alias=alias,
             domain=domain,
         ),
         render(
             "transactional/cannot-create-alias-domain.html",
+            user=user,
             alias=alias,
             domain=domain,
         ),
@@ -521,7 +548,9 @@ def can_create_directory_for_address(email_address: str) -> bool:
     for domain in config.ALIAS_DOMAINS:
         if email_address.endswith("@" + domain):
             return True
-
+    LOG.i(
+        f"Cannot create address in directory for {email_address} since it does not belong to a valid directory domain"
+    )
     return False
 
 
@@ -563,7 +592,7 @@ def email_can_be_used_as_mailbox(email_address: str) -> bool:
 
     from app.models import CustomDomain
 
-    if CustomDomain.get_by(domain=domain, verified=True):
+    if CustomDomain.get_by(domain=domain, is_sl_subdomain=True, verified=True):
         LOG.d("domain %s is a SimpleLogin custom domain", domain)
         return False
 
@@ -628,7 +657,11 @@ def get_mx_domain_list(domain) -> [str]:
     """
     priority_domains = get_mx_domains(domain)
 
-    return [d[:-1] for _, d in priority_domains]
+    mx_domains = []
+    for prio in priority_domains:
+        for domain in priority_domains[prio]:
+            mx_domains.append(domain[:-1])
+    return mx_domains
 
 
 def personal_email_already_used(email_address: str) -> bool:
@@ -919,10 +952,20 @@ def decode_text(text: str, encoding: EmailEncoding = EmailEncoding.NO) -> str:
         return text
 
 
-def add_header(msg: Message, text_header, html_header=None) -> Message:
+def add_header(
+    msg: Message, text_header, html_header=None, subject_prefix=None
+) -> Message:
     if not html_header:
         html_header = text_header.replace("\n", "<br>")
 
+    if subject_prefix is not None:
+        subject = msg[headers.SUBJECT]
+        if not subject:
+            msg.add_header(headers.SUBJECT, subject_prefix)
+        else:
+            subject = f"{subject_prefix} {subject}"
+            msg.replace_header(headers.SUBJECT, subject)
+
     content_type = msg.get_content_type().lower()
     if content_type == "text/plain":
         encoding = get_encoding(msg)
@@ -1253,6 +1296,7 @@ def spf_pass(
                     f"SimpleLogin Alert: attempt to send emails from your alias {alias.email} from unknown IP Address",
                     render(
                         "transactional/spf-fail.txt",
+                        user=user,
                         alias=alias.email,
                         ip=ip,
                         mailbox_url=config.URL + f"/dashboard/mailbox/{mailbox.id}#spf",
@@ -1262,6 +1306,7 @@ def spf_pass(
                     ),
                     render(
                         "transactional/spf-fail.html",
+                        user=user,
                         ip=ip,
                         mailbox_url=config.URL + f"/dashboard/mailbox/{mailbox.id}#spf",
                         to_email=contact_email,
@@ -1304,17 +1349,16 @@ def get_queue_id(msg: Message) -> Optional[str]:
 
     received_header = str(msg[headers.RECEIVED])
     if not received_header:
-        return
+        return None
 
     # received_header looks like 'from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434])\r\n\t(using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits))\r\n\t(No client certificate requested)\r\n\tby mx1.simplelogin.co (Postfix) with ESMTPS id 4FxQmw1DXdz2vK2\r\n\tfor <jglfdjgld@alias.com>; Fri,  4 Jun 2021 14:55:43 +0000 (UTC)'
-    search_result = re.search("with ESMTPS id [0-9a-zA-Z]{1,}", received_header)
-    if not search_result:
-        return
-
-    # the "with ESMTPS id 4FxQmw1DXdz2vK2" part
-    with_esmtps = received_header[search_result.start() : search_result.end()]
-
-    return with_esmtps[len("with ESMTPS id ") :]
+    search_result = re.search(r"with E?SMTP[AS]? id ([0-9a-zA-Z]{1,})", received_header)
+    if search_result:
+        return search_result.group(1)
+    search_result = re.search("\(Postfix\)\r\n\tid ([a-zA-Z0-9]{1,});", received_header)
+    if search_result:
+        return search_result.group(1)
+    return None
 
 
 def should_ignore_bounce(mail_from: str) -> bool:

app/app/events/event_dispatcher.py

@@ -0,0 +1,95 @@
+from abc import ABC, abstractmethod
+
+import newrelic.agent
+
+from app import config
+from app.db import Session
+from app.errors import ProtonPartnerNotSetUp
+from app.events.generated import event_pb2
+from app.log import LOG
+from app.models import User, PartnerUser, SyncEvent
+from app.proton.proton_partner import get_proton_partner
+from typing import Optional
+
+NOTIFICATION_CHANNEL = "simplelogin_sync_events"
+
+
+class Dispatcher(ABC):
+    @abstractmethod
+    def send(self, event: bytes):
+        pass
+
+
+class PostgresDispatcher(Dispatcher):
+    def send(self, event: bytes):
+        instance = SyncEvent.create(content=event, flush=True)
+        Session.execute(f"NOTIFY {NOTIFICATION_CHANNEL}, '{instance.id}';")
+
+    @staticmethod
+    def get():
+        return PostgresDispatcher()
+
+
+class GlobalDispatcher:
+    __dispatcher: Optional[Dispatcher] = None
+
+    @staticmethod
+    def get_dispatcher() -> Dispatcher:
+        if not GlobalDispatcher.__dispatcher:
+            GlobalDispatcher.__dispatcher = PostgresDispatcher.get()
+        return GlobalDispatcher.__dispatcher
+
+    @staticmethod
+    def set_dispatcher(dispatcher: Optional[Dispatcher]):
+        GlobalDispatcher.__dispatcher = dispatcher
+
+
+class EventDispatcher:
+    @staticmethod
+    def send_event(
+        user: User,
+        content: event_pb2.EventContent,
+        dispatcher: Optional[Dispatcher] = None,
+        skip_if_webhook_missing: bool = True,
+    ):
+        if dispatcher is None:
+            dispatcher = GlobalDispatcher.get_dispatcher()
+        if config.EVENT_WEBHOOK_DISABLE:
+            LOG.i("Not sending events because webhook is disabled")
+            return
+
+        if not config.EVENT_WEBHOOK and skip_if_webhook_missing:
+            LOG.i(
+                "Not sending events because webhook is not configured and allowed to be empty"
+            )
+            return
+
+        partner_user = EventDispatcher.__partner_user(user.id)
+        if not partner_user:
+            LOG.i(f"Not sending events because there's no partner user for user {user}")
+            return
+
+        event = event_pb2.Event(
+            user_id=user.id,
+            external_user_id=partner_user.external_user_id,
+            partner_id=partner_user.partner_id,
+            content=content,
+        )
+
+        serialized = event.SerializeToString()
+        dispatcher.send(serialized)
+
+        event_type = content.WhichOneof("content")
+        newrelic.agent.record_custom_event("EventStoredToDb", {"type": event_type})
+        LOG.i("Sent event to the dispatcher")
+
+    @staticmethod
+    def __partner_user(user_id: int) -> Optional[PartnerUser]:
+        # Check if the current user has a partner_id
+        try:
+            proton_partner_id = get_proton_partner().id
+        except ProtonPartnerNotSetUp:
+            return None
+
+        # It has. Retrieve the information for the PartnerUser
+        return PartnerUser.get_by(user_id=user_id, partner_id=proton_partner_id)

app/app/events/generated/event_pb2.py

@@ -0,0 +1,52 @@
+# -*- coding: utf-8 -*-
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# NO CHECKED-IN PROTOBUF GENCODE
+# source: event.proto
+# Protobuf Python Version: 5.27.0
+"""Generated protocol buffer code."""
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import descriptor_pool as _descriptor_pool
+from google.protobuf import runtime_version as _runtime_version
+from google.protobuf import symbol_database as _symbol_database
+from google.protobuf.internal import builder as _builder
+_runtime_version.ValidateProtobufRuntimeVersion(
+    _runtime_version.Domain.PUBLIC,
+    5,
+    27,
+    0,
+    '',
+    'event.proto'
+)
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+
+
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x0b\x65vent.proto\x12\x12simplelogin_events\":\n\x0fUserPlanChanged\x12\x15\n\rplan_end_time\x18\x01 \x01(\r\x12\x10\n\x08lifetime\x18\x02 \x01(\x08\"\r\n\x0bUserDeleted\"\\\n\x0c\x41liasCreated\x12\n\n\x02id\x18\x01 \x01(\r\x12\r\n\x05\x65mail\x18\x02 \x01(\t\x12\x0c\n\x04note\x18\x03 \x01(\t\x12\x0f\n\x07\x65nabled\x18\x04 \x01(\x08\x12\x12\n\ncreated_at\x18\x05 \x01(\r\"T\n\x12\x41liasStatusChanged\x12\n\n\x02id\x18\x01 \x01(\r\x12\r\n\x05\x65mail\x18\x02 \x01(\t\x12\x0f\n\x07\x65nabled\x18\x03 \x01(\x08\x12\x12\n\ncreated_at\x18\x04 \x01(\r\")\n\x0c\x41liasDeleted\x12\n\n\x02id\x18\x01 \x01(\r\x12\r\n\x05\x65mail\x18\x02 \x01(\t\"D\n\x10\x41liasCreatedList\x12\x30\n\x06\x65vents\x18\x01 \x03(\x0b\x32 .simplelogin_events.AliasCreated\"\x0e\n\x0cUserUnlinked\"\xce\x03\n\x0c\x45ventContent\x12?\n\x10user_plan_change\x18\x01 \x01(\x0b\x32#.simplelogin_events.UserPlanChangedH\x00\x12\x37\n\x0cuser_deleted\x18\x02 \x01(\x0b\x32\x1f.simplelogin_events.UserDeletedH\x00\x12\x39\n\ralias_created\x18\x03 \x01(\x0b\x32 .simplelogin_events.AliasCreatedH\x00\x12\x45\n\x13\x61lias_status_change\x18\x04 \x01(\x0b\x32&.simplelogin_events.AliasStatusChangedH\x00\x12\x39\n\ralias_deleted\x18\x05 \x01(\x0b\x32 .simplelogin_events.AliasDeletedH\x00\x12\x41\n\x11\x61lias_create_list\x18\x06 \x01(\x0b\x32$.simplelogin_events.AliasCreatedListH\x00\x12\x39\n\ruser_unlinked\x18\x07 \x01(\x0b\x32 .simplelogin_events.UserUnlinkedH\x00\x42\t\n\x07\x63ontent\"y\n\x05\x45vent\x12\x0f\n\x07user_id\x18\x01 \x01(\r\x12\x18\n\x10\x65xternal_user_id\x18\x02 \x01(\t\x12\x12\n\npartner_id\x18\x03 \x01(\r\x12\x31\n\x07\x63ontent\x18\x04 \x01(\x0b\x32 .simplelogin_events.EventContentb\x06proto3')
+
+_globals = globals()
+_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
+_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'event_pb2', _globals)
+if not _descriptor._USE_C_DESCRIPTORS:
+  DESCRIPTOR._loaded_options = None
+  _globals['_USERPLANCHANGED']._serialized_start=35
+  _globals['_USERPLANCHANGED']._serialized_end=93
+  _globals['_USERDELETED']._serialized_start=95
+  _globals['_USERDELETED']._serialized_end=108
+  _globals['_ALIASCREATED']._serialized_start=110
+  _globals['_ALIASCREATED']._serialized_end=202
+  _globals['_ALIASSTATUSCHANGED']._serialized_start=204
+  _globals['_ALIASSTATUSCHANGED']._serialized_end=288
+  _globals['_ALIASDELETED']._serialized_start=290
+  _globals['_ALIASDELETED']._serialized_end=331
+  _globals['_ALIASCREATEDLIST']._serialized_start=333
+  _globals['_ALIASCREATEDLIST']._serialized_end=401
+  _globals['_USERUNLINKED']._serialized_start=403
+  _globals['_USERUNLINKED']._serialized_end=417
+  _globals['_EVENTCONTENT']._serialized_start=420
+  _globals['_EVENTCONTENT']._serialized_end=882
+  _globals['_EVENT']._serialized_start=884
+  _globals['_EVENT']._serialized_end=1005
+# @@protoc_insertion_point(module_scope)

app/app/events/generated/event_pb2.pyi

@@ -0,0 +1,92 @@
+from google.protobuf.internal import containers as _containers
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import message as _message
+from typing import ClassVar as _ClassVar, Iterable as _Iterable, Mapping as _Mapping, Optional as _Optional, Union as _Union
+
+DESCRIPTOR: _descriptor.FileDescriptor
+
+class UserPlanChanged(_message.Message):
+    __slots__ = ("plan_end_time", "lifetime")
+    PLAN_END_TIME_FIELD_NUMBER: _ClassVar[int]
+    LIFETIME_FIELD_NUMBER: _ClassVar[int]
+    plan_end_time: int
+    lifetime: bool
+    def __init__(self, plan_end_time: _Optional[int] = ..., lifetime: bool = ...) -> None: ...
+
+class UserDeleted(_message.Message):
+    __slots__ = ()
+    def __init__(self) -> None: ...
+
+class AliasCreated(_message.Message):
+    __slots__ = ("id", "email", "note", "enabled", "created_at")
+    ID_FIELD_NUMBER: _ClassVar[int]
+    EMAIL_FIELD_NUMBER: _ClassVar[int]
+    NOTE_FIELD_NUMBER: _ClassVar[int]
+    ENABLED_FIELD_NUMBER: _ClassVar[int]
+    CREATED_AT_FIELD_NUMBER: _ClassVar[int]
+    id: int
+    email: str
+    note: str
+    enabled: bool
+    created_at: int
+    def __init__(self, id: _Optional[int] = ..., email: _Optional[str] = ..., note: _Optional[str] = ..., enabled: bool = ..., created_at: _Optional[int] = ...) -> None: ...
+
+class AliasStatusChanged(_message.Message):
+    __slots__ = ("id", "email", "enabled", "created_at")
+    ID_FIELD_NUMBER: _ClassVar[int]
+    EMAIL_FIELD_NUMBER: _ClassVar[int]
+    ENABLED_FIELD_NUMBER: _ClassVar[int]
+    CREATED_AT_FIELD_NUMBER: _ClassVar[int]
+    id: int
+    email: str
+    enabled: bool
+    created_at: int
+    def __init__(self, id: _Optional[int] = ..., email: _Optional[str] = ..., enabled: bool = ..., created_at: _Optional[int] = ...) -> None: ...
+
+class AliasDeleted(_message.Message):
+    __slots__ = ("id", "email")
+    ID_FIELD_NUMBER: _ClassVar[int]
+    EMAIL_FIELD_NUMBER: _ClassVar[int]
+    id: int
+    email: str
+    def __init__(self, id: _Optional[int] = ..., email: _Optional[str] = ...) -> None: ...
+
+class AliasCreatedList(_message.Message):
+    __slots__ = ("events",)
+    EVENTS_FIELD_NUMBER: _ClassVar[int]
+    events: _containers.RepeatedCompositeFieldContainer[AliasCreated]
+    def __init__(self, events: _Optional[_Iterable[_Union[AliasCreated, _Mapping]]] = ...) -> None: ...
+
+class UserUnlinked(_message.Message):
+    __slots__ = ()
+    def __init__(self) -> None: ...
+
+class EventContent(_message.Message):
+    __slots__ = ("user_plan_change", "user_deleted", "alias_created", "alias_status_change", "alias_deleted", "alias_create_list", "user_unlinked")
+    USER_PLAN_CHANGE_FIELD_NUMBER: _ClassVar[int]
+    USER_DELETED_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_CREATED_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_STATUS_CHANGE_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_DELETED_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_CREATE_LIST_FIELD_NUMBER: _ClassVar[int]
+    USER_UNLINKED_FIELD_NUMBER: _ClassVar[int]
+    user_plan_change: UserPlanChanged
+    user_deleted: UserDeleted
+    alias_created: AliasCreated
+    alias_status_change: AliasStatusChanged
+    alias_deleted: AliasDeleted
+    alias_create_list: AliasCreatedList
+    user_unlinked: UserUnlinked
+    def __init__(self, user_plan_change: _Optional[_Union[UserPlanChanged, _Mapping]] = ..., user_deleted: _Optional[_Union[UserDeleted, _Mapping]] = ..., alias_created: _Optional[_Union[AliasCreated, _Mapping]] = ..., alias_status_change: _Optional[_Union[AliasStatusChanged, _Mapping]] = ..., alias_deleted: _Optional[_Union[AliasDeleted, _Mapping]] = ..., alias_create_list: _Optional[_Union[AliasCreatedList, _Mapping]] = ..., user_unlinked: _Optional[_Union[UserUnlinked, _Mapping]] = ...) -> None: ...
+
+class Event(_message.Message):
+    __slots__ = ("user_id", "external_user_id", "partner_id", "content")
+    USER_ID_FIELD_NUMBER: _ClassVar[int]
+    EXTERNAL_USER_ID_FIELD_NUMBER: _ClassVar[int]
+    PARTNER_ID_FIELD_NUMBER: _ClassVar[int]
+    CONTENT_FIELD_NUMBER: _ClassVar[int]
+    user_id: int
+    external_user_id: str
+    partner_id: int
+    content: EventContent
+    def __init__(self, user_id: _Optional[int] = ..., external_user_id: _Optional[str] = ..., partner_id: _Optional[int] = ..., content: _Optional[_Union[EventContent, _Mapping]] = ...) -> None: ...

app/app/fake_data.py

@@ -33,8 +33,11 @@ from app.models import (
     SLDomain,
     Hibp,
     AliasHibp,
+    PartnerUser,
+    PartnerSubscription,
 )
 from app.pgp_utils import load_public_key
+from app.proton.proton_partner import get_proton_partner
 
 
 def fake_data():
@@ -269,3 +272,27 @@ def fake_data():
     CustomDomain.create(
         user_id=user.id, domain="old.com", verified=True, ownership_verified=True
     )
+
+    # Create a user
+    proton_partner = get_proton_partner()
+    user = User.create(
+        email="test@proton.me",
+        name="Proton test",
+        password="password",
+        activated=True,
+        is_admin=False,
+        intro_shown=True,
+        from_partner=True,
+        flush=True,
+    )
+    pu = PartnerUser.create(
+        user_id=user.id,
+        partner_id=proton_partner.id,
+        partner_email="test@proton.me",
+        external_user_id="DUMMY",
+        flush=True,
+    )
+    PartnerSubscription.create(
+        partner_user_id=pu.id, end_at=arrow.now().shift(years=1, days=1)
+    )
+    Session.commit()

app/app/handler/dmarc.py

@@ -64,6 +64,7 @@ More info on https://simplelogin.io/docs/getting-started/anti-phishing/
             msg,
             warning_plain_text,
             warning_html,
+            subject_prefix="[Possible phishing attempt]",
         )
         return changed_msg, None
 
@@ -76,6 +77,7 @@ More info on https://simplelogin.io/docs/getting-started/anti-phishing/
             msg,
             warning_plain_text,
             warning_html,
+            subject_prefix="[Possible phishing attempt]",
         )
         return changed_msg, None
 
@@ -104,12 +106,14 @@ More info on https://simplelogin.io/docs/getting-started/anti-phishing/
             f"An email sent to {alias.email} has been quarantined",
             render(
                 "transactional/message-quarantine-dmarc.txt.jinja2",
+                user=user,
                 from_header=from_header,
                 alias=alias,
                 refused_email_url=email_log.get_dashboard_url(),
             ),
             render(
                 "transactional/message-quarantine-dmarc.html",
+                user=user,
                 from_header=from_header,
                 alias=alias,
                 refused_email_url=email_log.get_dashboard_url(),
@@ -174,12 +178,14 @@ def apply_dmarc_policy_for_reply_phase(
         f"Attempt to send an email to your contact {contact_recipient.email} from {envelope.mail_from}",
         render(
             "transactional/spoof-reply.txt.jinja2",
+            user=alias_from.user,
             contact=contact_recipient,
             alias=alias_from,
             sender=envelope.mail_from,
         ),
         render(
             "transactional/spoof-reply.html",
+            user=alias_from.user,
             contact=contact_recipient,
             alias=alias_from,
             sender=envelope.mail_from,

app/app/handler/provider_complaint.py

@@ -319,11 +319,13 @@ def report_complaint_to_user_in_forward_phase(
         f"Abuse report from {capitalized_name}",
         render(
             "transactional/provider-complaint-forward-phase.txt.jinja2",
+            user=user,
             email=mailbox_email,
             provider=capitalized_name,
         ),
         render(
             "transactional/provider-complaint-forward-phase.html",
+            user=user,
             email=mailbox_email,
             provider=capitalized_name,
         ),

app/app/handler/unsubscribe_generator.py

@@ -2,8 +2,8 @@ import urllib
 from email.header import Header
 from email.message import Message
 
-from app.email import headers
 from app import config
+from app.email import headers
 from app.email_utils import add_or_replace_header, delete_header
 from app.handler.unsubscribe_encoder import (
     UnsubscribeEncoder,
@@ -46,7 +46,11 @@ class UnsubscribeGenerator:
             if start == -1 or end == -1 or start >= end:
                 continue
             method = raw_method[start + 1 : end]
-            url_data = urllib.parse.urlparse(method)
+            try:
+                url_data = urllib.parse.urlparse(method)
+            except ValueError:
+                LOG.debug(f"Unsub has invalid method {method}. Ignoring.")
+                continue
             if url_data.scheme == "mailto":
                 if url_data.path == config.UNSUBSCRIBER:
                     LOG.debug(

app/app/handler/unsubscribe_handler.py

@@ -5,6 +5,7 @@ from typing import Optional
 from aiosmtpd.smtp import Envelope
 
 from app import config
+from app import alias_utils
 from app.db import Session
 from app.email import headers, status
 from app.email_utils import (
@@ -101,7 +102,10 @@ class UnsubscribeHandler:
             mailbox.email, alias
         ):
             return status.E509
-        alias.enabled = False
+        LOG.i(f"User disabled alias {alias} via unsubscribe header")
+        alias_utils.change_alias_status(
+            alias, enabled=False, message="Set enabled=False via unsubscribe header"
+        )
         Session.commit()
         enable_alias_url = config.URL + f"/dashboard/?highlight_alias_id={alias.id}"
         for mailbox in alias.mailboxes:

app/app/jobs/event_jobs.py

@@ -0,0 +1,52 @@
+import newrelic.agent
+
+from app.events.event_dispatcher import EventDispatcher, Dispatcher
+from app.events.generated.event_pb2 import EventContent, AliasCreated, AliasCreatedList
+from app.log import LOG
+from app.models import User, Alias
+
+
+def send_alias_creation_events_for_user(
+    user: User, dispatcher: Dispatcher, chunk_size=50
+):
+    if user.disabled:
+        LOG.i("User {user} is disabled. Skipping sending events for that user")
+        return
+    chunk_size = min(chunk_size, 50)
+    event_list = []
+    LOG.i("Sending alias create events for user {user}")
+    for alias in (
+        Alias.yield_per_query(chunk_size)
+        .filter_by(user_id=user.id)
+        .order_by(Alias.id.asc())
+    ):
+        event_list.append(
+            AliasCreated(
+                id=alias.id,
+                email=alias.email,
+                note=alias.note,
+                enabled=alias.enabled,
+                created_at=int(alias.created_at.timestamp),
+            )
+        )
+        if len(event_list) >= chunk_size:
+            LOG.i(f"Sending {len(event_list)} alias create event for {user}")
+            EventDispatcher.send_event(
+                user,
+                EventContent(alias_create_list=AliasCreatedList(events=event_list)),
+                dispatcher=dispatcher,
+            )
+            newrelic.agent.record_custom_metric(
+                "Custom/event_alias_created_event", len(event_list)
+            )
+            event_list = []
+    if len(event_list) > 0:
+        LOG.i(f"Sending {len(event_list)} alias create event for {user}")
+        EventDispatcher.send_event(
+            user,
+            EventContent(alias_create_list=AliasCreatedList(events=event_list)),
+            dispatcher=dispatcher,
+        )
+        newrelic.agent.record_custom_metric(
+            "Custom/event_alias_created_event", len(event_list)
+        )

app/app/jobs/export_user_data_job.py

@@ -137,7 +137,9 @@ class ExportUserDataJob:
         msg[headers.SUBJECT] = "Your SimpleLogin data"
         msg[headers.FROM] = f'"SimpleLogin (noreply)" <{config.NOREPLY}>'
         msg[headers.TO] = to_email
-        msg.attach(MIMEText(render("transactional/user-report.html"), "html"))
+        msg.attach(
+            MIMEText(render("transactional/user-report.html", user=self._user), "html")
+        )
         attachment = MIMEApplication(zipped_contents.read())
         attachment.add_header(
             "Content-Disposition", "attachment", filename="user_report.zip"

app/app/jobs/send_event_job.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+import base64
+from typing import Optional
+
+import arrow
+
+from app import config
+from app.errors import ProtonPartnerNotSetUp
+from app.events.generated import event_pb2
+from app.events.generated.event_pb2 import EventContent
+from app.models import (
+    User,
+    Job,
+    PartnerUser,
+)
+from app.proton.proton_partner import get_proton_partner
+from events.event_sink import EventSink
+
+
+class SendEventToWebhookJob:
+    def __init__(self, user: User, event: EventContent):
+        self._user: User = user
+        self._event: EventContent = event
+
+    def run(self, sink: EventSink) -> bool:
+        # Check if the current user has a partner_id
+        try:
+            proton_partner_id = get_proton_partner().id
+        except ProtonPartnerNotSetUp:
+            return False
+
+        # It has. Retrieve the information for the PartnerUser
+        partner_user = PartnerUser.get_by(
+            user_id=self._user.id, partner_id=proton_partner_id
+        )
+        if partner_user is None:
+            return True
+        event = event_pb2.Event(
+            user_id=self._user.id,
+            external_user_id=partner_user.external_user_id,
+            partner_id=partner_user.partner_id,
+            content=self._event,
+        )
+
+        serialized = event.SerializeToString()
+        return sink.send_data_to_webhook(serialized)
+
+    @staticmethod
+    def create_from_job(job: Job) -> Optional[SendEventToWebhookJob]:
+        user = User.get(job.payload["user_id"])
+        if not user:
+            return None
+        event_data = base64.b64decode(job.payload["event"])
+        event = event_pb2.EventContent()
+        event.ParseFromString(event_data)
+
+        return SendEventToWebhookJob(user=user, event=event)
+
+    def store_job_in_db(self, run_at: Optional[arrow.Arrow]) -> Job:
+        stub = self._event.SerializeToString()
+        return Job.create(
+            name=config.JOB_SEND_EVENT_TO_WEBHOOK,
+            payload={
+                "user_id": self._user.id,
+                "event": base64.b64encode(stub).decode("utf-8"),
+            },
+            run_at=run_at if run_at is not None else arrow.now(),
+            commit=True,
+        )

app/app/log.py

@@ -10,7 +10,7 @@ from app.config import (
 
 # this format allows clickable link to code source in PyCharm
 _log_format = (
-    "%(asctime)s - %(name)s - %(levelname)s - %(process)d - "
+    "%(asctime)s - %(name)s - %(levelname)s - %(process)d - %(request_id)s"
     '"%(pathname)s:%(lineno)d" - %(funcName)s() - %(message_id)s - %(message)s'
 )
 _log_formatter = logging.Formatter(_log_format)
@@ -37,6 +37,21 @@ class EmailHandlerFilter(logging.Filter):
         return _MESSAGE_ID
 
 
+class RequestIdFilter(logging.Filter):
+    """automatically add request-id to keep track of a request"""
+
+    def filter(self, record):
+        from flask import g, has_request_context
+
+        request_id = ""
+        if has_request_context():
+            ctx_request_id = getattr(g, "request_id")
+            if ctx_request_id:
+                request_id = f"{ctx_request_id} - "
+        record.request_id = request_id
+        return True
+
+
 def _get_console_handler():
     console_handler = logging.StreamHandler(sys.stdout)
     console_handler.setFormatter(_log_formatter)
@@ -54,6 +69,7 @@ def _get_logger(name) -> logging.Logger:
     logger.addHandler(_get_console_handler())
 
     logger.addFilter(EmailHandlerFilter())
+    logger.addFilter(RequestIdFilter())
 
     # no propagation to avoid propagating to root logger
     logger.propagate = False

app/app/mail_sender.py

@@ -76,7 +76,6 @@ class SendRequest:
         file_path = os.path.join(config.SAVE_UNSENT_DIR, file_name)
         self.save_request_to_file(file_path)
 
-    @staticmethod
     def save_request_to_failed_dir(self, prefix: str = "DeliveryRetryFail"):
         file_name = (
             f"{prefix}-{int(time.time())}-{uuid.uuid4()}.{SendRequest.SAVE_EXTENSION}"

app/app/mailbox_utils.py

@@ -0,0 +1,509 @@
+import dataclasses
+import secrets
+from enum import Enum
+from typing import Optional
+
+import arrow
+from sqlalchemy.exc import IntegrityError
+
+from app import config
+from app.config import JOB_DELETE_MAILBOX
+from app.db import Session
+from app.email_utils import (
+    mailbox_already_used,
+    email_can_be_used_as_mailbox,
+    send_email,
+    render,
+    get_email_domain_part,
+)
+from app.email_validation import is_valid_email
+from app.log import LOG
+from app.models import User, Mailbox, Job, MailboxActivation, Alias
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+from app.utils import canonicalize_email, sanitize_email
+
+
+@dataclasses.dataclass
+class CreateMailboxOutput:
+    mailbox: Mailbox
+    activation: Optional[MailboxActivation]
+
+
+class MailboxError(Exception):
+    def __init__(self, msg: str):
+        self.msg = msg
+
+
+class OnlyPaidError(MailboxError):
+    def __init__(self):
+        self.msg = "Only available for paid plans"
+
+
+class CannotVerifyError(MailboxError):
+    def __init__(self, msg: str, deleted_activation_code: bool = False):
+        self.msg = msg
+        self.deleted_activation_code = deleted_activation_code
+
+
+MAX_ACTIVATION_TRIES = 3
+
+
+def create_mailbox(
+    user: User,
+    email: str,
+    verified: bool = False,
+    send_email: bool = True,
+    use_digit_codes: bool = False,
+    send_link: bool = True,
+) -> CreateMailboxOutput:
+    email = sanitize_email(email)
+    if not user.is_premium():
+        LOG.i(
+            f"User {user} has tried to create mailbox with {email} but is not premium"
+        )
+        raise OnlyPaidError()
+    check_email_for_mailbox(email, user)
+    new_mailbox: Mailbox = Mailbox.create(
+        email=email, user_id=user.id, verified=verified, commit=True
+    )
+    emit_user_audit_log(
+        user=user,
+        action=UserAuditLogAction.CreateMailbox,
+        message=f"Create mailbox {new_mailbox.id} ({new_mailbox.email}). Verified={verified}",
+        commit=True,
+    )
+
+    if verified:
+        LOG.i(f"User {user} as created a pre-verified mailbox with {email}")
+        return CreateMailboxOutput(mailbox=new_mailbox, activation=None)
+
+    LOG.i(f"User {user} has created mailbox with {email}")
+    activation = generate_activation_code(new_mailbox, use_digit_code=use_digit_codes)
+    output = CreateMailboxOutput(mailbox=new_mailbox, activation=activation)
+
+    if not send_email:
+        LOG.i(f"Skipping sending validation email for mailbox {new_mailbox}")
+        return output
+
+    send_verification_email(
+        user,
+        new_mailbox,
+        activation=activation,
+        send_link=send_link,
+    )
+    return output
+
+
+def check_email_for_mailbox(email, user):
+    if not is_valid_email(email):
+        LOG.i(
+            f"User {user} has tried to create mailbox with {email} but is not valid email"
+        )
+        raise MailboxError("Invalid email")
+    elif mailbox_already_used(email, user):
+        LOG.i(
+            f"User {user} has tried to create mailbox with {email} but email is already used"
+        )
+        raise MailboxError("Email already used")
+    elif not email_can_be_used_as_mailbox(email):
+        LOG.i(
+            f"User {user} has tried to create mailbox with {email} but email is invalid"
+        )
+        raise MailboxError("Invalid email")
+
+
+def delete_mailbox(
+    user: User,
+    mailbox_id: int,
+    transfer_mailbox_id: Optional[int],
+    send_mail: bool = True,
+) -> Mailbox:
+    mailbox = Mailbox.get(mailbox_id)
+
+    if not mailbox or mailbox.user_id != user.id:
+        LOG.i(
+            f"User {user} has tried to delete another user's mailbox with {mailbox_id}"
+        )
+        raise MailboxError("Invalid mailbox")
+
+    if mailbox.id == user.default_mailbox_id:
+        LOG.i(f"User {user} has tried to delete the default mailbox")
+        raise MailboxError("Cannot delete your default mailbox")
+
+    if transfer_mailbox_id and transfer_mailbox_id > 0:
+        transfer_mailbox = Mailbox.get(transfer_mailbox_id)
+
+        if not transfer_mailbox or transfer_mailbox.user_id != user.id:
+            LOG.i(
+                f"User {user} has tried to transfer to a mailbox owned by another user"
+            )
+            raise MailboxError("You must transfer the aliases to a mailbox you own")
+
+        if transfer_mailbox.id == mailbox.id:
+            LOG.i(
+                f"User {user} has tried to transfer to the same mailbox he is deleting"
+            )
+            raise MailboxError(
+                "You can not transfer the aliases to the mailbox you want to delete"
+            )
+
+        if not transfer_mailbox.verified:
+            LOG.i(f"User {user} has tried to transfer to a non verified mailbox")
+            raise MailboxError("Your new mailbox is not verified")
+
+    # Schedule delete account job
+    LOG.i(
+        f"User {user} has scheduled delete mailbox job for {mailbox.id} with transfer to mailbox {transfer_mailbox_id}"
+    )
+    Job.create(
+        name=JOB_DELETE_MAILBOX,
+        payload={
+            "mailbox_id": mailbox.id,
+            "transfer_mailbox_id": transfer_mailbox_id
+            if transfer_mailbox_id and transfer_mailbox_id > 0
+            else None,
+            "send_mail": send_mail,
+        },
+        run_at=arrow.now(),
+        commit=True,
+    )
+    return mailbox
+
+
+def clear_activation_codes_for_mailbox(mailbox: Mailbox):
+    Session.query(MailboxActivation).filter(
+        MailboxActivation.mailbox_id == mailbox.id
+    ).delete()
+    Session.commit()
+
+
+def verify_mailbox_code(user: User, mailbox_id: int, code: str) -> Mailbox:
+    mailbox = Mailbox.get(mailbox_id)
+    if not mailbox:
+        LOG.i(
+            f"User {user} failed to verify mailbox {mailbox_id} because it does not exist"
+        )
+        raise MailboxError("Invalid mailbox")
+    if mailbox.user_id != user.id:
+        LOG.i(
+            f"User {user} failed to verify mailbox {mailbox_id} because it's owned by another user"
+        )
+        raise MailboxError("Invalid mailbox")
+    if mailbox.verified and not mailbox.new_email:
+        LOG.i(
+            f"User {user} failed to verify mailbox {mailbox_id} because it's already verified"
+        )
+        clear_activation_codes_for_mailbox(mailbox)
+        return mailbox
+
+    activation = (
+        MailboxActivation.filter(MailboxActivation.mailbox_id == mailbox_id)
+        .order_by(MailboxActivation.created_at.desc())
+        .first()
+    )
+    if not activation:
+        LOG.i(
+            f"User {user} failed to verify mailbox {mailbox_id} because there is no activation"
+        )
+        raise MailboxError("Invalid code")
+    if activation.tries >= MAX_ACTIVATION_TRIES:
+        LOG.i(f"User {user} failed to verify mailbox {mailbox_id} more than 3 times")
+        clear_activation_codes_for_mailbox(mailbox)
+        raise CannotVerifyError(
+            "Invalid activation code. Please request another code.",
+            deleted_activation_code=True,
+        )
+    if activation.created_at < arrow.now().shift(minutes=-15):
+        LOG.i(
+            f"User {user} failed to verify mailbox {mailbox_id} because code is too old"
+        )
+        clear_activation_codes_for_mailbox(mailbox)
+        raise CannotVerifyError("Invalid activation code. Please request another code.")
+    if code != activation.code:
+        LOG.i(
+            f"User {user} failed to verify mailbox {mailbox_id} because code does not match"
+        )
+        activation.tries = activation.tries + 1
+        Session.commit()
+        raise CannotVerifyError("Invalid activation code")
+    if mailbox.new_email:
+        LOG.i(
+            f"User {user} has verified mailbox email change from {mailbox.email} to {mailbox.new_email}"
+        )
+        emit_user_audit_log(
+            user=user,
+            action=UserAuditLogAction.UpdateMailbox,
+            message=f"Change mailbox email for mailbox {mailbox_id} (old={mailbox.email} | new={mailbox.new_email})",
+        )
+        mailbox.email = mailbox.new_email
+        mailbox.new_email = None
+        mailbox.verified = True
+    elif not mailbox.verified:
+        LOG.i(f"User {user} has verified mailbox {mailbox_id}")
+        mailbox.verified = True
+        emit_user_audit_log(
+            user=user,
+            action=UserAuditLogAction.VerifyMailbox,
+            message=f"Verify mailbox {mailbox_id} ({mailbox.email})",
+        )
+        if Mailbox.get_by(email=mailbox.new_email, user_id=user.id):
+            raise MailboxError("That addres is already in use")
+
+    else:
+        LOG.i(
+            "User {user} alread has mailbox {mailbox} verified and no pending email change"
+        )
+
+    clear_activation_codes_for_mailbox(mailbox)
+    return mailbox
+
+
+def generate_activation_code(
+    mailbox: Mailbox, use_digit_code: bool = False
+) -> MailboxActivation:
+    clear_activation_codes_for_mailbox(mailbox)
+    if use_digit_code:
+        if config.MAILBOX_VERIFICATION_OVERRIDE_CODE:
+            code = config.MAILBOX_VERIFICATION_OVERRIDE_CODE
+        else:
+            code = "{:06d}".format(secrets.randbelow(1000000))[:6]
+    else:
+        code = secrets.token_urlsafe(16)
+    return MailboxActivation.create(
+        mailbox_id=mailbox.id,
+        code=code,
+        tries=0,
+        commit=True,
+    )
+
+
+def send_verification_email(
+    user: User,
+    mailbox: Mailbox,
+    activation: MailboxActivation,
+    send_link: bool = True,
+):
+    LOG.i(
+        f"Sending mailbox verification email to {mailbox.email} with send link={send_link}"
+    )
+
+    if send_link:
+        verification_url = (
+            config.URL
+            + "/dashboard/mailbox_verify"
+            + f"?mailbox_id={mailbox.id}&code={activation.code}"
+        )
+    else:
+        verification_url = None
+
+    send_email(
+        mailbox.email,
+        f"Please confirm your mailbox {mailbox.email}",
+        render(
+            "transactional/verify-mailbox.txt.jinja2",
+            user=user,
+            code=activation.code,
+            link=verification_url,
+            mailbox_email=mailbox.email,
+        ),
+        render(
+            "transactional/verify-mailbox.html",
+            user=user,
+            code=activation.code,
+            link=verification_url,
+            mailbox_email=mailbox.email,
+        ),
+    )
+
+
+def send_change_email(user: User, mailbox: Mailbox, activation: MailboxActivation):
+    verification_url = f"{config.URL}/dashboard/mailbox/confirm_change?mailbox_id={mailbox.id}&code={activation.code}"
+
+    send_email(
+        mailbox.new_email,
+        "Confirm mailbox change on SimpleLogin",
+        render(
+            "transactional/verify-mailbox-change.txt.jinja2",
+            user=user,
+            link=verification_url,
+            mailbox_email=mailbox.email,
+            mailbox_new_email=mailbox.new_email,
+        ),
+        render(
+            "transactional/verify-mailbox-change.html",
+            user=user,
+            link=verification_url,
+            mailbox_email=mailbox.email,
+            mailbox_new_email=mailbox.new_email,
+        ),
+    )
+
+
+def request_mailbox_email_change(
+    user: User,
+    mailbox: Mailbox,
+    new_email: str,
+    email_ownership_verified: bool = False,
+    send_email: bool = True,
+    use_digit_codes: bool = False,
+) -> CreateMailboxOutput:
+    new_email = sanitize_email(new_email)
+    if new_email == mailbox.email:
+        raise MailboxError("Same email")
+    check_email_for_mailbox(new_email, user)
+    if email_ownership_verified:
+        mailbox.email = new_email
+        mailbox.new_email = None
+    else:
+        mailbox.new_email = new_email
+    emit_user_audit_log(
+        user=user,
+        action=UserAuditLogAction.UpdateMailbox,
+        message=f"Updated mailbox {mailbox.id} email ({new_email}) pre-verified({email_ownership_verified}",
+    )
+    try:
+        Session.commit()
+    except IntegrityError:
+        LOG.i(f"This email {new_email} is already pending for some mailbox")
+        Session.rollback()
+        raise MailboxError("Email already in use")
+
+    if email_ownership_verified:
+        LOG.i(f"User {user} as created a pre-verified mailbox with {new_email}")
+        return CreateMailboxOutput(mailbox=mailbox, activation=None)
+
+    LOG.i(f"User {user} has updated mailbox email with {new_email}")
+    activation = generate_activation_code(mailbox, use_digit_code=use_digit_codes)
+    output = CreateMailboxOutput(mailbox=mailbox, activation=activation)
+
+    if not send_email:
+        LOG.i(f"Skipping sending validation email for mailbox {mailbox}")
+        return output
+
+    send_change_email(
+        user,
+        mailbox,
+        activation=activation,
+    )
+    return output
+
+
+class MailboxEmailChangeError(Enum):
+    InvalidId = 1
+    EmailAlreadyUsed = 2
+
+
+@dataclasses.dataclass
+class MailboxEmailChangeResult:
+    error: Optional[MailboxEmailChangeError]
+    message: str
+    message_category: str
+
+
+def perform_mailbox_email_change(mailbox_id: int) -> MailboxEmailChangeResult:
+    mailbox: Optional[Mailbox] = Mailbox.get(mailbox_id)
+
+    # new_email can be None if user cancels change in the meantime
+    if mailbox and mailbox.new_email:
+        user = mailbox.user
+        if Mailbox.get_by(email=mailbox.new_email, user_id=user.id):
+            return MailboxEmailChangeResult(
+                error=MailboxEmailChangeError.EmailAlreadyUsed,
+                message=f"{mailbox.new_email} is already used",
+                message_category="error",
+            )
+
+        emit_user_audit_log(
+            user=user,
+            action=UserAuditLogAction.UpdateMailbox,
+            message=f"Change mailbox email for mailbox {mailbox_id} (old={mailbox.email} | new={mailbox.new_email})",
+        )
+        mailbox.email = mailbox.new_email
+        mailbox.new_email = None
+
+        # mark mailbox as verified if the change request is sent from an unverified mailbox
+        mailbox.verified = True
+        Session.commit()
+
+        LOG.d("Mailbox change %s is verified", mailbox)
+        return MailboxEmailChangeResult(
+            error=None,
+            message=f"The {mailbox.email} is updated",
+            message_category="success",
+        )
+    else:
+        return MailboxEmailChangeResult(
+            error=MailboxEmailChangeError.InvalidId,
+            message="Invalid link",
+            message_category="error",
+        )
+
+
+def cancel_email_change(mailbox_id: int, user: User):
+    mailbox = Mailbox.get(mailbox_id)
+    if not mailbox:
+        LOG.i(
+            f"User {user} has tried to cancel a mailbox an unknown mailbox {mailbox_id}"
+        )
+        raise MailboxError("Invalid mailbox")
+    if mailbox.user.id != user.id:
+        LOG.i(
+            f"User {user} has tried to cancel a mailbox {mailbox} owned by another user"
+        )
+        raise MailboxError("Invalid mailbox")
+    mailbox.new_email = None
+    LOG.i(f"User {mailbox.user} has cancelled mailbox email change")
+    clear_activation_codes_for_mailbox(mailbox)
+
+
+def __get_alias_mailbox_from_email(
+    email_address: str, alias: Alias
+) -> Optional[Mailbox]:
+    for mailbox in alias.mailboxes:
+        if mailbox.email == email_address:
+            return mailbox
+
+        for authorized_address in mailbox.authorized_addresses:
+            if authorized_address.email == email_address:
+                LOG.d(
+                    "Found an authorized address for %s %s %s",
+                    alias,
+                    mailbox,
+                    authorized_address,
+                )
+                return mailbox
+    return None
+
+
+def __get_alias_mailbox_from_email_or_canonical_email(
+    email_address: str, alias: Alias
+) -> Optional[Mailbox]:
+    # We need to first check for the uncanonicalized version because we still have users in the db with the
+    # email non canonicalized. So if it matches the already existing one use that, otherwise check the canonical one
+    mbox = __get_alias_mailbox_from_email(email_address, alias)
+    if mbox is not None:
+        return mbox
+    canonical_email = canonicalize_email(email_address)
+    if canonical_email != email_address:
+        return __get_alias_mailbox_from_email(canonical_email, alias)
+    return None
+
+
+def get_mailbox_for_reply_phase(
+    envelope_mail_from: str, header_mail_from: str, alias
+) -> Optional[Mailbox]:
+    """return the corresponding mailbox given the mail_from and alias
+    Usually the mail_from=mailbox.email but it can also be one of the authorized address
+    """
+    mbox = __get_alias_mailbox_from_email_or_canonical_email(envelope_mail_from, alias)
+    if mbox is not None:
+        return mbox
+    if not header_mail_from:
+        return None
+    envelope_from_domain = get_email_domain_part(envelope_mail_from)
+    header_from_domain = get_email_domain_part(header_mail_from)
+    if envelope_from_domain != header_from_domain:
+        return None
+    # For services that use VERP sending (envelope from has encoded data to account for bounces)
+    # if the domain is the same in the header from as the envelope from we can use the header from
+    return __get_alias_mailbox_from_email_or_canonical_email(header_mail_from, alias)

app/app/models.py

@@ -24,6 +24,7 @@ from sqlalchemy import text, desc, CheckConstraint, Index, Column
 from sqlalchemy.dialects.postgresql import TSVECTOR
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import deferred
+from sqlalchemy.orm.exc import ObjectDeletedError
 from sqlalchemy.sql import and_
 from sqlalchemy_utils import ArrowType
 
@@ -31,7 +32,6 @@ from app import config, rate_limiter
 from app import s3
 from app.db import Session
 from app.dns_utils import get_mx_domains
-
 from app.errors import (
     AliasInTrashError,
     DirectoryInTrashError,
@@ -157,6 +157,8 @@ class File(Base, ModelMixin):
     path = sa.Column(sa.String(128), unique=True, nullable=False)
     user_id = sa.Column(sa.ForeignKey("users.id", ondelete="cascade"), nullable=True)
 
+    __table_args__ = (sa.Index("ix_file_user_id", "user_id"),)
+
     def get_url(self, expires_in=3600):
         return s3.get_url(self.path, expires_in)
 
@@ -263,6 +265,15 @@ class UnsubscribeBehaviourEnum(EnumE):
     PreserveOriginal = 2
 
 
+class AliasDeleteReason(EnumE):
+    Unspecified = 0
+    UserHasBeenDeleted = 1
+    ManualAction = 2
+    DirectoryDeleted = 3
+    MailboxDeleted = 4
+    CustomDomainDeleted = 5
+
+
 class IntEnumType(sa.types.TypeDecorator):
     impl = sa.Integer
 
@@ -309,6 +320,8 @@ class HibpNotifiedAlias(Base, ModelMixin):
 
     notified_at = sa.Column(ArrowType, default=arrow.utcnow, nullable=False)
 
+    __table_args__ = (sa.Index("ix_hibp_notified_alias_user_id", "user_id"),)
+
 
 class Fido(Base, ModelMixin):
     __tablename__ = "fido"
@@ -323,13 +336,16 @@ class Fido(Base, ModelMixin):
     name = sa.Column(sa.String(128), nullable=False, unique=False)
     user_id = sa.Column(sa.ForeignKey("users.id", ondelete="cascade"), nullable=True)
 
+    __table_args__ = (sa.Index("ix_fido_user_id", "user_id"),)
+
 
 class User(Base, ModelMixin, UserMixin, PasswordOracle):
     __tablename__ = "users"
 
-    FLAG_FREE_DISABLE_CREATE_ALIAS = 1 << 0
+    FLAG_FREE_DISABLE_CREATE_CONTACTS = 1 << 0
     FLAG_CREATED_FROM_PARTNER = 1 << 1
     FLAG_FREE_OLD_ALIAS_LIMIT = 1 << 2
+    FLAG_CREATED_ALIAS_FROM_PARTNER = 1 << 3
 
     email = sa.Column(sa.String(256), unique=True, nullable=False)
 
@@ -345,7 +361,7 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         sa.Boolean, default=True, nullable=False, server_default="1"
     )
 
-    activated = sa.Column(sa.Boolean, default=False, nullable=False, index=True)
+    activated = sa.Column(sa.Boolean, default=False, nullable=False)
 
     # an account can be disabled if having harmful behavior
     disabled = sa.Column(sa.Boolean, default=False, nullable=False, server_default="0")
@@ -525,10 +541,15 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         sa.Boolean, default=True, nullable=False, server_default="1"
     )
 
+    # user opted in for data breach check
+    enable_data_breach_check = sa.Column(
+        sa.Boolean, default=False, nullable=False, server_default="0"
+    )
+
     # bitwise flags. Allow for future expansion
     flags = sa.Column(
         sa.BigInteger,
-        default=FLAG_FREE_DISABLE_CREATE_ALIAS,
+        default=FLAG_FREE_DISABLE_CREATE_CONTACTS,
         server_default="0",
         nullable=False,
     )
@@ -549,6 +570,17 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
             "ix_users_activated_trial_end_lifetime", activated, trial_end, lifetime
         ),
         sa.Index("ix_users_delete_on", delete_on),
+        sa.Index("ix_users_default_mailbox_id", default_mailbox_id),
+        sa.Index(
+            "ix_users_default_alias_custom_domain_id", default_alias_custom_domain_id
+        ),
+        sa.Index("ix_users_profile_picture_id", profile_picture_id),
+        sa.Index(
+            "idx_users_email_trgm",
+            "email",
+            postgresql_ops={"email": "gin_trgm_ops"},
+            postgresql_using="gin",
+        ),
     )
 
     @property
@@ -601,10 +633,19 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         if "alternative_id" not in kwargs:
             user.alternative_id = str(uuid.uuid4())
 
+        from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+
+        trail = ". Created from partner" if from_partner else ""
+        emit_user_audit_log(
+            user=user,
+            action=UserAuditLogAction.CreateUser,
+            message=f"Created user {email}{trail}",
+        )
+
         # If the user is created from partner, do not notify
         # nor give a trial
         if from_partner:
-            user.flags = User.FLAG_CREATED_FROM_PARTNER
+            user.flags = user.flags | User.FLAG_CREATED_FROM_PARTNER
             user.notification = False
             user.trial_end = None
             Job.create(
@@ -652,6 +693,27 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
 
         return user
 
+    @classmethod
+    def delete(cls, obj_id, commit=False):
+        # Internal import to avoid global import cycles
+        from app.events.event_dispatcher import EventDispatcher
+        from app.events.generated.event_pb2 import UserDeleted, EventContent
+
+        user: User = cls.get(obj_id)
+        EventDispatcher.send_event(user, EventContent(user_deleted=UserDeleted()))
+
+        # Manually delete all aliases for the user that is about to be deleted
+        from app.alias_utils import delete_alias
+
+        for alias in Alias.filter_by(user_id=user.id):
+            delete_alias(alias, user, AliasDeleteReason.UserHasBeenDeleted)
+
+        res = super(User, cls).delete(obj_id)
+        if commit:
+            Session.commit()
+
+        return res
+
     def get_active_subscription(
         self, include_partner_subscription: bool = True
     ) -> Optional[
@@ -937,7 +999,7 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
     def has_custom_domain(self):
         return CustomDomain.filter_by(user_id=self.id, verified=True).count() > 0
 
-    def custom_domains(self):
+    def custom_domains(self) -> List["CustomDomain"]:
         return CustomDomain.filter_by(user_id=self.id, verified=True).all()
 
     def available_domains_for_random_alias(
@@ -949,8 +1011,8 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         - the domain
         """
         res = []
-        for domain in self.available_sl_domains(alias_options=alias_options):
-            res.append((True, domain))
+        for domain in self.get_sl_domains(alias_options=alias_options):
+            res.append((True, domain.domain))
 
         for custom_domain in self.verified_custom_domains():
             res.append((False, custom_domain.domain))
@@ -1092,7 +1154,10 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         - Verified custom domains
 
         """
-        domains = self.available_sl_domains(alias_options=alias_options)
+        domains = [
+            sl_domain.domain
+            for sl_domain in self.get_sl_domains(alias_options=alias_options)
+        ]
 
         for custom_domain in self.verified_custom_domains():
             domains.append(custom_domain.domain)
@@ -1129,10 +1194,17 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
     def can_create_contacts(self) -> bool:
         if self.is_premium():
             return True
-        if self.flags & User.FLAG_FREE_DISABLE_CREATE_ALIAS == 0:
+        if self.flags & User.FLAG_FREE_DISABLE_CREATE_CONTACTS == 0:
             return True
         return not config.DISABLE_CREATE_CONTACTS_FOR_FREE_USERS
 
+    def has_used_alias_from_partner(self) -> bool:
+        return (
+            self.flags
+            & (User.FLAG_CREATED_ALIAS_FROM_PARTNER | User.FLAG_CREATED_FROM_PARTNER)
+            > 0
+        )
+
     def __repr__(self):
         return f"<User {self.id} {self.name} {self.email}>"
 
@@ -1165,6 +1237,8 @@ class ActivationCode(Base, ModelMixin):
 
     expired = sa.Column(ArrowType, nullable=False, default=_expiration_1h)
 
+    __table_args__ = (sa.Index("ix_activation_code_user_id", "user_id"),)
+
     def is_expired(self):
         return self.expired < arrow.now()
 
@@ -1181,6 +1255,8 @@ class ResetPasswordCode(Base, ModelMixin):
 
     expired = sa.Column(ArrowType, nullable=False, default=_expiration_1h)
 
+    __table_args__ = (sa.Index("ix_reset_password_code_user_id", "user_id"),)
+
     def is_expired(self):
         return self.expired < arrow.now()
 
@@ -1223,6 +1299,8 @@ class MfaBrowser(Base, ModelMixin):
 
     user = orm.relationship(User)
 
+    __table_args__ = (sa.Index("ix_mfa_browser_user_id", "user_id"),)
+
     @classmethod
     def create_new(cls, user, token_length=64) -> "MfaBrowser":
         found = False
@@ -1281,6 +1359,12 @@ class Client(Base, ModelMixin):
     user = orm.relationship(User)
     referral = orm.relationship("Referral")
 
+    __table_args__ = (
+        sa.Index("ix_client_user_id", "user_id"),
+        sa.Index("ix_client_icon_id", "icon_id"),
+        sa.Index("ix_client_referral_id", "referral_id"),
+    )
+
     def nb_user(self):
         return ClientUser.filter_by(client_id=self.id).count()
 
@@ -1329,6 +1413,8 @@ class RedirectUri(Base, ModelMixin):
 
     client = orm.relationship(Client, backref="redirect_uris")
 
+    __table_args__ = (sa.Index("ix_redirect_uri_client_id", "client_id"),)
+
 
 class AuthorizationCode(Base, ModelMixin):
     __tablename__ = "authorization_code"
@@ -1350,6 +1436,11 @@ class AuthorizationCode(Base, ModelMixin):
 
     expired = sa.Column(ArrowType, nullable=False, default=_expiration_5m)
 
+    __table_args__ = (
+        sa.Index("ix_authorization_code_client_id", "client_id"),
+        sa.Index("ix_authorization_code_user_id", "user_id"),
+    )
+
     def is_expired(self):
         return self.expired < arrow.now()
 
@@ -1372,6 +1463,11 @@ class OauthToken(Base, ModelMixin):
 
     expired = sa.Column(ArrowType, nullable=False, default=_expiration_1h)
 
+    __table_args__ = (
+        sa.Index("ix_oauth_token_user_id", "user_id"),
+        sa.Index("ix_oauth_token_client_id", "client_id"),
+    )
+
     def is_expired(self):
         return self.expired < arrow.now()
 
@@ -1525,6 +1621,7 @@ class Alias(Base, ModelMixin):
             postgresql_ops={"note": "gin_trgm_ops"},
             postgresql_using="gin",
         ),
+        Index("ix_alias_original_owner_id", "original_owner_id"),
     )
 
     user = orm.relationship(User, foreign_keys=[user_id])
@@ -1567,7 +1664,7 @@ class Alias(Base, ModelMixin):
         return False
 
     @staticmethod
-    def get_custom_domain(alias_address) -> Optional["CustomDomain"]:
+    def get_custom_domain(alias_address: str) -> Optional["CustomDomain"]:
         alias_domain = validate_email(
             alias_address, check_deliverability=False, allow_smtputf8=False
         ).domain
@@ -1610,16 +1707,44 @@ class Alias(Base, ModelMixin):
             custom_domain = Alias.get_custom_domain(email)
             if custom_domain:
                 new_alias.custom_domain_id = custom_domain.id
+        else:
+            custom_domain = CustomDomain.get(kw["custom_domain_id"])
+        # If it comes from a custom domain created from partner. Mark it as created from partner
+        if custom_domain is not None and custom_domain.partner_id is not None:
+            new_alias.flags = (new_alias.flags or 0) | Alias.FLAG_PARTNER_CREATED
 
         Session.add(new_alias)
         DailyMetric.get_or_create_today_metric().nb_alias += 1
 
+        if (
+            new_alias.flags & cls.FLAG_PARTNER_CREATED > 0
+            and new_alias.user.flags & User.FLAG_CREATED_ALIAS_FROM_PARTNER == 0
+        ):
+            user.flags = user.flags | User.FLAG_CREATED_ALIAS_FROM_PARTNER
+
         if commit:
             Session.commit()
 
         if flush:
             Session.flush()
 
+        # Internal import to avoid global import cycles
+        from app.alias_audit_log_utils import AliasAuditLogAction, emit_alias_audit_log
+        from app.events.event_dispatcher import EventDispatcher
+        from app.events.generated.event_pb2 import AliasCreated, EventContent
+
+        event = AliasCreated(
+            id=new_alias.id,
+            email=new_alias.email,
+            note=new_alias.note,
+            enabled=True,
+            created_at=int(new_alias.created_at.timestamp),
+        )
+        EventDispatcher.send_event(user, EventContent(alias_created=event))
+        emit_alias_audit_log(
+            new_alias, AliasAuditLogAction.CreateAlias, "New alias created"
+        )
+
         return new_alias
 
     @classmethod
@@ -1798,17 +1923,22 @@ class Contact(Base, ModelMixin):
 
     MAX_NAME_LENGTH = 512
 
+    FLAG_PARTNER_CREATED = 1 << 0
+
     __tablename__ = "contact"
 
     __table_args__ = (
         sa.UniqueConstraint("alias_id", "website_email", name="uq_contact"),
+        sa.Index("ix_contact_user_id_id", "user_id", "id"),
     )
 
     user_id = sa.Column(
-        sa.ForeignKey(User.id, ondelete="cascade"), nullable=False, index=True
+        sa.ForeignKey(User.id, ondelete="cascade"),
+        nullable=False,
     )
     alias_id = sa.Column(
-        sa.ForeignKey(Alias.id, ondelete="cascade"), nullable=False, index=True
+        sa.ForeignKey(Alias.id, ondelete="cascade"),
+        nullable=False,
     )
 
     name = sa.Column(
@@ -1856,6 +1986,9 @@ class Contact(Base, ModelMixin):
     # whether contact is created automatically during the forward phase
     automatic_created = sa.Column(sa.Boolean, nullable=True, default=False)
 
+    # contact flags
+    flags = sa.Column(sa.Integer, nullable=False, default=0, server_default="0")
+
     @property
     def email(self):
         return self.website_email
@@ -1985,11 +2118,15 @@ class Contact(Base, ModelMixin):
 
 class EmailLog(Base, ModelMixin):
     __tablename__ = "email_log"
-    __table_args__ = (Index("ix_email_log_created_at", "created_at"),)
-
-    user_id = sa.Column(
-        sa.ForeignKey(User.id, ondelete="cascade"), nullable=False, index=True
+    __table_args__ = (
+        Index("ix_email_log_created_at", "created_at"),
+        Index("ix_email_log_mailbox_id", "mailbox_id"),
+        Index("ix_email_log_bounced_mailbox_id", "bounced_mailbox_id"),
+        Index("ix_email_log_refused_email_id", "refused_email_id"),
+        Index("ix_email_log_user_id_email_log_id", "user_id", "id"),
     )
+
+    user_id = sa.Column(sa.ForeignKey(User.id, ondelete="cascade"), nullable=False)
     contact_id = sa.Column(
         sa.ForeignKey(Contact.id, ondelete="cascade"), nullable=False, index=True
     )
@@ -2215,6 +2352,12 @@ class DeletedAlias(Base, ModelMixin):
     __tablename__ = "deleted_alias"
 
     email = sa.Column(sa.String(256), unique=True, nullable=False)
+    reason = sa.Column(
+        IntEnumType(AliasDeleteReason),
+        nullable=False,
+        default=AliasDeleteReason.Unspecified,
+        server_default=str(AliasDeleteReason.Unspecified.value),
+    )
 
     @classmethod
     def create(cls, **kw):
@@ -2255,10 +2398,12 @@ class AliasUsedOn(Base, ModelMixin):
 
     __table_args__ = (
         sa.UniqueConstraint("alias_id", "hostname", name="uq_alias_used"),
+        sa.Index("ix_alias_used_on_user_id", "user_id"),
     )
 
     alias_id = sa.Column(
-        sa.ForeignKey(Alias.id, ondelete="cascade"), nullable=False, index=True
+        sa.ForeignKey(Alias.id, ondelete="cascade"),
+        nullable=False,
     )
     user_id = sa.Column(sa.ForeignKey(User.id, ondelete="cascade"), nullable=False)
 
@@ -2281,6 +2426,8 @@ class ApiKey(Base, ModelMixin):
 
     user = orm.relationship(User)
 
+    __table_args__ = (sa.Index("ix_api_key_user_id", "user_id"),)
+
     @classmethod
     def create(cls, user_id, name=None, **kwargs):
         code = random_string(60)
@@ -2348,6 +2495,18 @@ class CustomDomain(Base, ModelMixin):
         sa.Boolean, nullable=False, default=False, server_default="0"
     )
 
+    partner_id = sa.Column(
+        sa.Integer,
+        sa.ForeignKey("partner.id"),
+        nullable=True,
+        default=None,
+        server_default=None,
+    )
+
+    pending_deletion = sa.Column(
+        sa.Boolean, nullable=False, default=False, server_default="0"
+    )
+
     __table_args__ = (
         Index(
             "ix_unique_domain",  # Index name
@@ -2355,6 +2514,8 @@ class CustomDomain(Base, ModelMixin):
             unique=True,
             postgresql_where=Column("ownership_verified"),
         ),  # The condition
+        Index("ix_custom_domain_user_id", "user_id"),
+        Index("ix_custom_domain_pending_deletion", "pending_deletion"),
     )
 
     user = orm.relationship(User, foreign_keys=[user_id], backref="custom_domains")
@@ -2372,9 +2533,6 @@ class CustomDomain(Base, ModelMixin):
     def get_trash_url(self):
         return config.URL + f"/dashboard/domains/{self.id}/trash"
 
-    def get_ownership_dns_txt_value(self):
-        return f"sl-verification={self.ownership_txt_token}"
-
     @classmethod
     def create(cls, **kwargs):
         domain = kwargs.get("domain")
@@ -2402,6 +2560,13 @@ class CustomDomain(Base, ModelMixin):
         if obj.is_sl_subdomain:
             DeletedSubdomain.create(domain=obj.domain)
 
+        from app import alias_utils
+
+        for alias in Alias.filter_by(custom_domain_id=obj_id):
+            alias_utils.delete_alias(
+                alias, obj.user, AliasDeleteReason.CustomDomainDeleted
+            )
+
         return super(CustomDomain, cls).delete(obj_id)
 
     @property
@@ -2409,7 +2574,7 @@ class CustomDomain(Base, ModelMixin):
         return sorted(self._auto_create_rules, key=lambda rule: rule.order)
 
     def __repr__(self):
-        return f"<Custom Domain {self.domain}>"
+        return f"<Custom Domain {self.id} {self.domain}>"
 
 
 class AutoCreateRule(Base, ModelMixin):
@@ -2464,6 +2629,7 @@ class DomainDeletedAlias(Base, ModelMixin):
 
     __table_args__ = (
         sa.UniqueConstraint("domain_id", "email", name="uq_domain_trash"),
+        sa.Index("ix_domain_deleted_alias_user_id", "user_id"),
     )
 
     email = sa.Column(sa.String(256), nullable=False)
@@ -2474,6 +2640,12 @@ class DomainDeletedAlias(Base, ModelMixin):
 
     domain = orm.relationship(CustomDomain)
     user = orm.relationship(User, foreign_keys=[user_id])
+    reason = sa.Column(
+        IntEnumType(AliasDeleteReason),
+        nullable=False,
+        default=AliasDeleteReason.Unspecified,
+        server_default=str(AliasDeleteReason.Unspecified.value),
+    )
 
     @classmethod
     def create(cls, **kw):
@@ -2518,6 +2690,8 @@ class Coupon(Base, ModelMixin):
     # a coupon can have an expiration
     expires_date = sa.Column(ArrowType, nullable=True)
 
+    __table_args__ = (sa.Index("ix_coupon_used_by_user_id", "used_by_user_id"),)
+
 
 class Directory(Base, ModelMixin):
     __tablename__ = "directory"
@@ -2532,6 +2706,8 @@ class Directory(Base, ModelMixin):
         "Mailbox", secondary="directory_mailbox", lazy="joined"
     )
 
+    __table_args__ = (sa.Index("ix_directory_user_id", "user_id"),)
+
     @property
     def mailboxes(self):
         if self._mailboxes:
@@ -2565,7 +2741,7 @@ class Directory(Base, ModelMixin):
         for alias in Alias.filter_by(directory_id=obj_id):
             from app import alias_utils
 
-            alias_utils.delete_alias(alias, user)
+            alias_utils.delete_alias(alias, user, AliasDeleteReason.DirectoryDeleted)
 
         DeletedDirectory.create(name=obj.name)
         cls.filter(cls.id == obj_id).delete()
@@ -2592,7 +2768,6 @@ class Job(Base, ModelMixin):
         nullable=False,
         server_default=str(JobState.ready.value),
         default=JobState.ready.value,
-        index=True,
     )
     attempts = sa.Column(sa.Integer, nullable=False, server_default="0", default=0)
     taken_at = sa.Column(ArrowType, nullable=True)
@@ -2605,9 +2780,7 @@ class Job(Base, ModelMixin):
 
 class Mailbox(Base, ModelMixin):
     __tablename__ = "mailbox"
-    user_id = sa.Column(
-        sa.ForeignKey(User.id, ondelete="cascade"), nullable=False, index=True
-    )
+    user_id = sa.Column(sa.ForeignKey(User.id, ondelete="cascade"), nullable=False)
     email = sa.Column(sa.String(256), nullable=False, index=True)
     verified = sa.Column(sa.Boolean, default=False, nullable=False)
     force_spf = sa.Column(sa.Boolean, default=True, server_default="1", nullable=False)
@@ -2633,7 +2806,17 @@ class Mailbox(Base, ModelMixin):
 
     generic_subject = sa.Column(sa.String(78), nullable=True)
 
-    __table_args__ = (sa.UniqueConstraint("user_id", "email", name="uq_mailbox_user"),)
+    __table_args__ = (
+        sa.UniqueConstraint("user_id", "email", name="uq_mailbox_user"),
+        sa.Index("ix_mailbox_pgp_finger_print", "pgp_finger_print"),
+        # index on email column using pg_trgm
+        Index(
+            "ix_mailbox_email_trgm_idx",
+            "email",
+            postgresql_ops={"email": "gin_trgm_ops"},
+            postgresql_using="gin",
+        ),
+    )
 
     user = orm.relationship(User, foreign_keys=[user_id])
 
@@ -2644,30 +2827,31 @@ class Mailbox(Base, ModelMixin):
         return False
 
     def nb_alias(self):
-        return (
-            AliasMailbox.filter_by(mailbox_id=self.id).count()
-            + Alias.filter_by(mailbox_id=self.id).count()
+        alias_ids = set(
+            am.alias_id
+            for am in AliasMailbox.filter_by(mailbox_id=self.id).values(
+                AliasMailbox.alias_id
+            )
         )
+        for alias in Alias.filter_by(mailbox_id=self.id).values(Alias.id):
+            alias_ids.add(alias.id)
+        return len(alias_ids)
 
     def is_proton(self) -> bool:
-        if (
-            self.email.endswith("@proton.me")
-            or self.email.endswith("@protonmail.com")
-            or self.email.endswith("@protonmail.ch")
-            or self.email.endswith("@proton.ch")
-            or self.email.endswith("@pm.me")
-        ):
-            return True
+        for proton_email_domain in config.PROTON_EMAIL_DOMAINS:
+            if self.email.endswith(f"@{proton_email_domain}"):
+                return True
 
         from app.email_utils import get_email_local_part
 
-        mx_domains: [(int, str)] = get_mx_domains(get_email_local_part(self.email))
+        mx_domains = get_mx_domains(get_email_local_part(self.email))
+
+        proton_mx_domains = config.PROTON_MX_SERVERS
         # Proton is the first domain
-        if mx_domains and mx_domains[0][1] in (
-            "mail.protonmail.ch.",
-            "mailsec.protonmail.ch.",
-        ):
-            return True
+        for prio in mx_domains:
+            for mx_domain in mx_domains[prio]:
+                if mx_domain in proton_mx_domains:
+                    return True
 
         return False
 
@@ -2688,7 +2872,7 @@ class Mailbox(Base, ModelMixin):
                 from app import alias_utils
 
                 # only put aliases that have mailbox as a single mailbox into trash
-                alias_utils.delete_alias(alias, user)
+                alias_utils.delete_alias(alias, user, AliasDeleteReason.MailboxDeleted)
             Session.commit()
 
         cls.filter(cls.id == obj_id).delete()
@@ -2696,12 +2880,15 @@ class Mailbox(Base, ModelMixin):
 
     @property
     def aliases(self) -> [Alias]:
-        ret = Alias.filter_by(mailbox_id=self.id).all()
+        ret = dict(
+            (alias.id, alias) for alias in Alias.filter_by(mailbox_id=self.id).all()
+        )
 
         for am in AliasMailbox.filter_by(mailbox_id=self.id):
-            ret.append(am.alias)
+            if am.alias_id not in ret:
+                ret[am.alias_id] = am.alias
 
-        return ret
+        return list(ret.values())
 
     @classmethod
     def create(cls, **kw):
@@ -2713,6 +2900,16 @@ class Mailbox(Base, ModelMixin):
         return f"<Mailbox {self.id} {self.email}>"
 
 
+class MailboxActivation(Base, ModelMixin):
+    __tablename__ = "mailbox_activation"
+
+    mailbox_id = sa.Column(
+        sa.ForeignKey(Mailbox.id, ondelete="cascade"), nullable=False, index=True
+    )
+    code = sa.Column(sa.String(32), nullable=False, index=True)
+    tries = sa.Column(sa.Integer, default=0, nullable=False)
+
+
 class AccountActivation(Base, ModelMixin):
     """contains code to activate the user account when they sign up on mobile"""
 
@@ -2752,6 +2949,8 @@ class RefusedEmail(Base, ModelMixin):
     # toggle this when email content (stored at full_report_path & path are deleted)
     deleted = sa.Column(sa.Boolean, nullable=False, default=False, server_default="0")
 
+    __table_args__ = (sa.Index("ix_refused_email_user_id", "user_id"),)
+
     def get_url(self, expires_in=3600):
         if self.path:
             return s3.get_url(self.path, expires_in)
@@ -2774,6 +2973,8 @@ class Referral(Base, ModelMixin):
 
     user = orm.relationship(User, foreign_keys=[user_id], backref="referrals")
 
+    __table_args__ = (sa.Index("ix_referral_user_id", "user_id"),)
+
     @property
     def nb_user(self) -> int:
         return User.filter_by(referral_id=self.id, activated=True).count()
@@ -2813,6 +3014,12 @@ class SentAlert(Base, ModelMixin):
     to_email = sa.Column(sa.String(256), nullable=False)
     alert_type = sa.Column(sa.String(256), nullable=False)
 
+    __table_args__ = (
+        sa.Index("ix_sent_alert_user_id", "user_id"),
+        sa.Index("ix_sent_alert_to_email", "to_email"),
+        sa.Index("ix_sent_alert_alert_type", "alert_type"),
+    )
+
 
 class AliasMailbox(Base, ModelMixin):
     __tablename__ = "alias_mailbox"
@@ -2821,7 +3028,8 @@ class AliasMailbox(Base, ModelMixin):
     )
 
     alias_id = sa.Column(
-        sa.ForeignKey(Alias.id, ondelete="cascade"), nullable=False, index=True
+        sa.ForeignKey(Alias.id, ondelete="cascade"),
+        nullable=False,
     )
     mailbox_id = sa.Column(
         sa.ForeignKey(Mailbox.id, ondelete="cascade"), nullable=False, index=True
@@ -2836,7 +3044,8 @@ class AliasHibp(Base, ModelMixin):
     __table_args__ = (sa.UniqueConstraint("alias_id", "hibp_id", name="uq_alias_hibp"),)
 
     alias_id = sa.Column(
-        sa.Integer(), sa.ForeignKey("alias.id", ondelete="cascade"), index=True
+        sa.Integer(),
+        sa.ForeignKey("alias.id", ondelete="cascade"),
     )
     hibp_id = sa.Column(
         sa.Integer(), sa.ForeignKey("hibp.id", ondelete="cascade"), index=True
@@ -2931,11 +3140,7 @@ class RecoveryCode(Base, ModelMixin):
     @classmethod
     def find_by_user_code(cls, user: User, code: str):
         hashed_code = cls._hash_code(code)
-        # TODO: Only return hashed codes once there aren't unhashed codes in the db.
-        found_code = cls.get_by(user_id=user.id, code=hashed_code)
-        if found_code:
-            return found_code
-        return cls.get_by(user_id=user.id, code=code)
+        return cls.get_by(user_id=user.id, code=hashed_code)
 
     @classmethod
     def empty(cls, user):
@@ -3030,7 +3235,7 @@ class SLDomain(Base, ModelMixin):
     )
 
     def __repr__(self):
-        return f"<SLDomain {self.domain} {'Premium' if self.premium_only else 'Free'}"
+        return f"<SLDomain {self.id} {self.domain} {'Premium' if self.premium_only else 'Free'}>"
 
 
 class Monitoring(Base, ModelMixin):
@@ -3062,6 +3267,11 @@ class BatchImport(Base, ModelMixin):
     file = orm.relationship(File)
     user = orm.relationship(User)
 
+    __table_args__ = (
+        sa.Index("ix_batch_import_file_id", "file_id"),
+        sa.Index("ix_batch_import_user_id", "user_id"),
+    )
+
     def nb_alias(self):
         return Alias.filter_by(batch_import_id=self.id).count()
 
@@ -3082,6 +3292,7 @@ class AuthorizedAddress(Base, ModelMixin):
 
     __table_args__ = (
         sa.UniqueConstraint("mailbox_id", "email", name="uq_authorize_address"),
+        sa.Index("ix_authorized_address_user_id", "user_id"),
     )
 
     mailbox = orm.relationship(Mailbox, backref="authorized_addresses")
@@ -3223,6 +3434,8 @@ class Payout(Base, ModelMixin):
 
     user = orm.relationship(User)
 
+    __table_args__ = (sa.Index("ix_payout_user_id", "user_id"),)
+
 
 class IgnoredEmail(Base, ModelMixin):
     """If an email has mail_from and rcpt_to present in this table, discard it by returning 250 status."""
@@ -3324,6 +3537,8 @@ class PhoneReservation(Base, ModelMixin):
     start = sa.Column(ArrowType, nullable=False)
     end = sa.Column(ArrowType, nullable=False)
 
+    __table_args__ = (sa.Index("ix_phone_reservation_user_id", "user_id"),)
+
 
 class PhoneMessage(Base, ModelMixin):
     __tablename__ = "phone_message"
@@ -3400,6 +3615,7 @@ class AdminAuditLog(Base):
             action=AuditLogActionEnum.stop_trial.value,
             model="User",
             model_id=user_id,
+            data={},
         )
 
     @classmethod
@@ -3497,6 +3713,11 @@ class ProviderComplaint(Base, ModelMixin):
     user = orm.relationship(User, foreign_keys=[user_id])
     refused_email = orm.relationship(RefusedEmail, foreign_keys=[refused_email_id])
 
+    __table_args__ = (
+        sa.Index("ix_provider_complaint_user_id", "user_id"),
+        sa.Index("ix_provider_complaint_refused_email_id", "refused_email_id"),
+    )
+
 
 class PartnerApiToken(Base, ModelMixin):
     __tablename__ = "partner_api_token"
@@ -3540,7 +3761,8 @@ class PartnerUser(Base, ModelMixin):
         index=True,
     )
     partner_id = sa.Column(
-        sa.ForeignKey("partner.id", ondelete="cascade"), nullable=False, index=True
+        sa.ForeignKey("partner.id", ondelete="cascade"),
+        nullable=False,
     )
     external_user_id = sa.Column(sa.String(128), unique=False, nullable=False)
     partner_email = sa.Column(sa.String(255), unique=False, nullable=True)
@@ -3567,7 +3789,8 @@ class PartnerSubscription(Base, ModelMixin):
     )
 
     # when the partner subscription ends
-    end_at = sa.Column(ArrowType, nullable=False, index=True)
+    end_at = sa.Column(ArrowType, nullable=True, index=True)
+    lifetime = sa.Column(sa.Boolean, default=False, nullable=False, server_default="0")
 
     partner_user = orm.relationship(PartnerUser)
 
@@ -3589,7 +3812,9 @@ class PartnerSubscription(Base, ModelMixin):
         return None
 
     def is_active(self):
-        return self.end_at > arrow.now().shift(days=-_PARTNER_SUBSCRIPTION_GRACE_DAYS)
+        return self.lifetime or self.end_at > arrow.now().shift(
+            days=-_PARTNER_SUBSCRIPTION_GRACE_DAYS
+        )
 
 
 # endregion
@@ -3620,6 +3845,8 @@ class NewsletterUser(Base, ModelMixin):
     user = orm.relationship(User)
     newsletter = orm.relationship(Newsletter)
 
+    __table_args__ = (sa.Index("ix_newsletter_user_user_id", "user_id"),)
+
 
 class ApiToCookieToken(Base, ModelMixin):
     __tablename__ = "api_cookie_token"
@@ -3630,8 +3857,102 @@ class ApiToCookieToken(Base, ModelMixin):
     user = orm.relationship(User)
     api_key = orm.relationship(ApiKey)
 
+    __table_args__ = (
+        sa.Index("ix_api_to_cookie_token_api_key_id", "api_key_id"),
+        sa.Index("ix_api_to_cookie_token_user_id", "user_id"),
+    )
+
     @classmethod
     def create(cls, **kwargs):
         code = secrets.token_urlsafe(32)
 
         return super().create(code=code, **kwargs)
+
+
+class SyncEvent(Base, ModelMixin):
+    """This model holds the events that need to be sent to the webhook"""
+
+    __tablename__ = "sync_event"
+    content = sa.Column(sa.LargeBinary, unique=False, nullable=False)
+    taken_time = sa.Column(
+        ArrowType, default=None, nullable=True, server_default=None, index=True
+    )
+    retry_count = sa.Column(sa.Integer, default=0, nullable=False, server_default="0")
+
+    __table_args__ = (
+        sa.Index("ix_sync_event_created_at", "created_at"),
+        sa.Index("ix_sync_event_taken_time", "taken_time"),
+    )
+
+    def mark_as_taken(self, allow_taken_older_than: Optional[Arrow] = None) -> bool:
+        try:
+            taken_condition = ["taken_time IS NULL"]
+            args = {"taken_time": arrow.now().datetime, "sync_event_id": self.id}
+            if allow_taken_older_than:
+                taken_condition.append("taken_time < :taken_older_than")
+                args["taken_older_than"] = allow_taken_older_than.datetime
+            sql_taken_condition = "({})".format(" OR ".join(taken_condition))
+            sql = f"UPDATE sync_event SET taken_time = :taken_time WHERE id = :sync_event_id AND {sql_taken_condition}"
+            res = Session.execute(sql, args)
+            Session.commit()
+        except ObjectDeletedError:
+            return False
+
+        return res.rowcount > 0
+
+    @classmethod
+    def get_dead_letter(cls, older_than: Arrow, max_retries: int) -> [SyncEvent]:
+        return (
+            SyncEvent.filter(
+                (
+                    (
+                        SyncEvent.taken_time.isnot(None)
+                        & (SyncEvent.taken_time < older_than)
+                    )
+                    | (
+                        SyncEvent.taken_time.is_(None)
+                        & (SyncEvent.created_at < older_than)
+                    )
+                )
+                & (SyncEvent.retry_count < max_retries)
+            )
+            .order_by(SyncEvent.id)
+            .limit(100)
+            .all()
+        )
+
+
+class AliasAuditLog(Base, ModelMixin):
+    """This model holds an audit log for all the actions performed to an alias"""
+
+    __tablename__ = "alias_audit_log"
+
+    user_id = sa.Column(sa.Integer, nullable=False)
+    alias_id = sa.Column(sa.Integer, nullable=False)
+    alias_email = sa.Column(sa.String(255), nullable=False)
+    action = sa.Column(sa.String(255), nullable=False)
+    message = sa.Column(sa.Text, default=None, nullable=True)
+
+    __table_args__ = (
+        sa.Index("ix_alias_audit_log_user_id", "user_id"),
+        sa.Index("ix_alias_audit_log_alias_id", "alias_id"),
+        sa.Index("ix_alias_audit_log_alias_email", "alias_email"),
+        sa.Index("ix_alias_audit_log_created_at", "created_at"),
+    )
+
+
+class UserAuditLog(Base, ModelMixin):
+    """This model holds an audit log for all the actions performed by a user"""
+
+    __tablename__ = "user_audit_log"
+
+    user_id = sa.Column(sa.Integer, nullable=False)
+    user_email = sa.Column(sa.String(255), nullable=False)
+    action = sa.Column(sa.String(255), nullable=False)
+    message = sa.Column(sa.Text, default=None, nullable=True)
+
+    __table_args__ = (
+        sa.Index("ix_user_audit_log_user_id", "user_id"),
+        sa.Index("ix_user_audit_log_user_email", "user_email"),
+        sa.Index("ix_user_audit_log_created_at", "created_at"),
+    )

app/app/monitor/views.py

@@ -1,4 +1,4 @@
-from app.build_info import SHA1
+from app.build_info import SHA1, VERSION
 from app.monitor.base import monitor_bp
 
 
@@ -7,6 +7,11 @@ def git_sha1():
     return SHA1
 
 
+@monitor_bp.route("/version")
+def version():
+    return VERSION
+
+
 @monitor_bp.route("/live")
 def live():
     return "live"

app/app/monitor_utils.py

@@ -0,0 +1,8 @@
+from app.build_info import VERSION
+import newrelic.agent
+
+
+def send_version_event(service: str):
+    newrelic.agent.record_custom_event(
+        "ServiceVersion", {"service": service, "version": VERSION}
+    )

app/app/onboarding/views/final.py

@@ -20,7 +20,7 @@ def final():
     if form.validate_on_submit():
         alias = Alias.get_by(email=form.email.data)
         if alias and alias.user_id == current_user.id:
-            send_test_email_alias(alias.email, current_user.name)
+            send_test_email_alias(current_user, alias.email)
             flash("An email is sent to your alias", "success")
 
     return render_template(

app/app/onboarding/views/index.py

@@ -1,7 +1,13 @@
 from app.onboarding.base import onboarding_bp
-from flask import render_template
+from flask import render_template, url_for, redirect
 
 
 @onboarding_bp.route("/", methods=["GET"])
 def index():
-    return render_template("onboarding/index.html")
+    # Do the redirect to ensure cookies are set because they are SameSite=lax/strict
+    return redirect(url_for("onboarding.setup"))
+
+
+@onboarding_bp.route("/setup", methods=["GET"])
+def setup():
+    return render_template("onboarding/setup.html")

app/app/paddle_callback.py

@@ -27,6 +27,7 @@ def failed_payment(sub: Subscription, subscription_id: str):
         "SimpleLogin - your subscription has failed to be renewed",
         render(
             "transactional/subscription-cancel.txt",
+            user=user,
             end_date=arrow.arrow.datetime.utcnow(),
         ),
     )

app/app/partner_user_utils.py

@@ -0,0 +1,55 @@
+from typing import Optional
+
+import arrow
+from arrow import Arrow
+
+from app import config
+from app.models import PartnerUser, PartnerSubscription, User, Job
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+
+
+def create_partner_user(
+    user: User, partner_id: int, partner_email: str, external_user_id: str
+) -> PartnerUser:
+    instance = PartnerUser.create(
+        user_id=user.id,
+        partner_id=partner_id,
+        partner_email=partner_email,
+        external_user_id=external_user_id,
+    )
+    Job.create(
+        name=config.JOB_SEND_ALIAS_CREATION_EVENTS,
+        payload={"user_id": user.id},
+        run_at=arrow.now(),
+    )
+    emit_user_audit_log(
+        user=user,
+        action=UserAuditLogAction.LinkAccount,
+        message=f"Linked account to partner_id={partner_id} | partner_email={partner_email} | external_user_id={external_user_id}",
+    )
+
+    return instance
+
+
+def create_partner_subscription(
+    partner_user: PartnerUser,
+    expiration: Optional[Arrow] = None,
+    lifetime: bool = False,
+    msg: Optional[str] = None,
+) -> PartnerSubscription:
+    instance = PartnerSubscription.create(
+        partner_user_id=partner_user.id,
+        end_at=expiration,
+        lifetime=lifetime,
+    )
+
+    message = "User upgraded through partner subscription"
+    if msg:
+        message += f" | {msg}"
+    emit_user_audit_log(
+        user=partner_user.user,
+        action=UserAuditLogAction.Upgrade,
+        message=message,
+    )
+
+    return instance

app/app/payments/coinbase.py

@@ -0,0 +1,121 @@
+from typing import Optional
+
+import arrow
+
+from coinbase_commerce.error import WebhookInvalidPayload, SignatureVerificationError
+from coinbase_commerce.webhook import Webhook
+from flask import Flask, request
+
+from app.config import COINBASE_WEBHOOK_SECRET
+from app.db import Session
+from app.email_utils import send_email, render
+from app.log import LOG
+from app.models import CoinbaseSubscription, User
+from app.subscription_webhook import execute_subscription_webhook
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+
+
+def setup_coinbase_commerce(app: Flask):
+    @app.route("/coinbase", methods=["POST"])
+    def coinbase_webhook():
+        # event payload
+        request_data = request.data.decode("utf-8")
+        # webhook signature
+        request_sig = request.headers.get("X-CC-Webhook-Signature", None)
+
+        try:
+            # signature verification and event object construction
+            event = Webhook.construct_event(
+                request_data, request_sig, COINBASE_WEBHOOK_SECRET
+            )
+        except (WebhookInvalidPayload, SignatureVerificationError) as e:
+            LOG.e("Invalid Coinbase webhook")
+            return str(e), 400
+
+        LOG.d("Coinbase event %s", event)
+
+        if event["type"] == "charge:confirmed":
+            if handle_coinbase_event(event):
+                return "success", 200
+            else:
+                return "error", 400
+
+        return "success", 200
+
+
+def handle_coinbase_event(event) -> bool:
+    server_user_id = event["data"]["metadata"]["user_id"]
+    try:
+        user_id = int(server_user_id)
+    except ValueError:
+        user_id = int(float(server_user_id))
+
+    code = event["data"]["code"]
+    user: Optional[User] = User.get(user_id)
+    if not user:
+        LOG.e("User not found %s", user_id)
+        return False
+
+    coinbase_subscription: CoinbaseSubscription = CoinbaseSubscription.get_by(
+        user_id=user_id
+    )
+
+    if not coinbase_subscription:
+        LOG.d("Create a coinbase subscription for %s", user)
+        coinbase_subscription = CoinbaseSubscription.create(
+            user_id=user_id, end_at=arrow.now().shift(years=1), code=code, commit=True
+        )
+        emit_user_audit_log(
+            user=user,
+            action=UserAuditLogAction.Upgrade,
+            message="Upgraded though Coinbase",
+            commit=True,
+        )
+        send_email(
+            user.email,
+            "Your SimpleLogin account has been upgraded",
+            render(
+                "transactional/coinbase/new-subscription.txt",
+                user=user,
+                coinbase_subscription=coinbase_subscription,
+            ),
+            render(
+                "transactional/coinbase/new-subscription.html",
+                user=user,
+                coinbase_subscription=coinbase_subscription,
+            ),
+        )
+    else:
+        if coinbase_subscription.code != code:
+            LOG.d("Update code from %s to %s", coinbase_subscription.code, code)
+            coinbase_subscription.code = code
+
+        if coinbase_subscription.is_active():
+            coinbase_subscription.end_at = coinbase_subscription.end_at.shift(years=1)
+        else:  # already expired subscription
+            coinbase_subscription.end_at = arrow.now().shift(years=1)
+
+        emit_user_audit_log(
+            user=user,
+            action=UserAuditLogAction.SubscriptionExtended,
+            message="Extended coinbase subscription",
+        )
+        Session.commit()
+
+        send_email(
+            user.email,
+            "Your SimpleLogin account has been extended",
+            render(
+                "transactional/coinbase/extend-subscription.txt",
+                user=user,
+                coinbase_subscription=coinbase_subscription,
+            ),
+            render(
+                "transactional/coinbase/extend-subscription.html",
+                user=user,
+                coinbase_subscription=coinbase_subscription,
+            ),
+        )
+    execute_subscription_webhook(user)
+
+    return True

app/app/payments/paddle.py

@@ -0,0 +1,286 @@
+import arrow
+import json
+from dateutil.relativedelta import relativedelta
+
+
+from flask import Flask, request
+
+from app import paddle_utils, paddle_callback
+from app.config import (
+    PADDLE_MONTHLY_PRODUCT_ID,
+    PADDLE_MONTHLY_PRODUCT_IDS,
+    PADDLE_YEARLY_PRODUCT_IDS,
+    PADDLE_COUPON_ID,
+)
+from app.db import Session
+from app.email_utils import send_email, render
+from app.log import LOG
+from app.models import Subscription, PlanEnum, User, Coupon
+from app.subscription_webhook import execute_subscription_webhook
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+from app.utils import random_string
+
+
+def setup_paddle_callback(app: Flask):
+    @app.route("/paddle", methods=["GET", "POST"])
+    def paddle():
+        LOG.d(f"paddle callback {request.form.get('alert_name')} {request.form}")
+
+        # make sure the request comes from Paddle
+        if not paddle_utils.verify_incoming_request(dict(request.form)):
+            LOG.e("request not coming from paddle. Request data:%s", dict(request.form))
+            return "KO", 400
+
+        if (
+            request.form.get("alert_name") == "subscription_created"
+        ):  # new user subscribes
+            # the passthrough is json encoded, e.g.
+            # request.form.get("passthrough") = '{"user_id": 88 }'
+            passthrough = json.loads(request.form.get("passthrough"))
+            user_id = passthrough.get("user_id")
+            user = User.get(user_id)
+
+            subscription_plan_id = int(request.form.get("subscription_plan_id"))
+
+            if subscription_plan_id in PADDLE_MONTHLY_PRODUCT_IDS:
+                plan = PlanEnum.monthly
+            elif subscription_plan_id in PADDLE_YEARLY_PRODUCT_IDS:
+                plan = PlanEnum.yearly
+            else:
+                LOG.e(
+                    "Unknown subscription_plan_id %s %s",
+                    subscription_plan_id,
+                    request.form,
+                )
+                return "No such subscription", 400
+
+            sub = Subscription.get_by(user_id=user.id)
+
+            if not sub:
+                LOG.d(f"create a new Subscription for user {user}")
+                Subscription.create(
+                    user_id=user.id,
+                    cancel_url=request.form.get("cancel_url"),
+                    update_url=request.form.get("update_url"),
+                    subscription_id=request.form.get("subscription_id"),
+                    event_time=arrow.now(),
+                    next_bill_date=arrow.get(
+                        request.form.get("next_bill_date"), "YYYY-MM-DD"
+                    ).date(),
+                    plan=plan,
+                )
+                emit_user_audit_log(
+                    user=user,
+                    action=UserAuditLogAction.Upgrade,
+                    message="Upgraded through Paddle",
+                )
+            else:
+                LOG.d(f"Update an existing Subscription for user {user}")
+                sub.cancel_url = request.form.get("cancel_url")
+                sub.update_url = request.form.get("update_url")
+                sub.subscription_id = request.form.get("subscription_id")
+                sub.event_time = arrow.now()
+                sub.next_bill_date = arrow.get(
+                    request.form.get("next_bill_date"), "YYYY-MM-DD"
+                ).date()
+                sub.plan = plan
+
+                # make sure to set the new plan as not-cancelled
+                # in case user cancels a plan and subscribes a new plan
+                sub.cancelled = False
+                emit_user_audit_log(
+                    user=user,
+                    action=UserAuditLogAction.SubscriptionExtended,
+                    message="Extended Paddle subscription",
+                )
+
+            execute_subscription_webhook(user)
+            LOG.d("User %s upgrades!", user)
+
+            Session.commit()
+
+        elif request.form.get("alert_name") == "subscription_payment_succeeded":
+            subscription_id = request.form.get("subscription_id")
+            LOG.d("Update subscription %s", subscription_id)
+
+            sub: Subscription = Subscription.get_by(subscription_id=subscription_id)
+            # when user subscribes, the "subscription_payment_succeeded" can arrive BEFORE "subscription_created"
+            # at that time, subscription object does not exist yet
+            if sub:
+                sub.event_time = arrow.now()
+                sub.next_bill_date = arrow.get(
+                    request.form.get("next_bill_date"), "YYYY-MM-DD"
+                ).date()
+
+                Session.commit()
+                execute_subscription_webhook(sub.user)
+
+        elif request.form.get("alert_name") == "subscription_cancelled":
+            subscription_id = request.form.get("subscription_id")
+
+            sub: Subscription = Subscription.get_by(subscription_id=subscription_id)
+            if sub:
+                # cancellation_effective_date should be the same as next_bill_date
+                LOG.w(
+                    "Cancel subscription %s %s on %s, next bill date %s",
+                    subscription_id,
+                    sub.user,
+                    request.form.get("cancellation_effective_date"),
+                    sub.next_bill_date,
+                )
+                sub.event_time = arrow.now()
+
+                sub.cancelled = True
+                emit_user_audit_log(
+                    user=sub.user,
+                    action=UserAuditLogAction.SubscriptionCancelled,
+                    message="Cancelled Paddle subscription",
+                )
+                Session.commit()
+
+                user = sub.user
+
+                send_email(
+                    user.email,
+                    "SimpleLogin - your subscription is canceled",
+                    render(
+                        "transactional/subscription-cancel.txt",
+                        user=user,
+                        end_date=request.form.get("cancellation_effective_date"),
+                    ),
+                )
+                execute_subscription_webhook(sub.user)
+
+            else:
+                # user might have deleted their account
+                LOG.i(f"Cancel non-exist subscription {subscription_id}")
+                return "OK"
+        elif request.form.get("alert_name") == "subscription_updated":
+            subscription_id = request.form.get("subscription_id")
+
+            sub: Subscription = Subscription.get_by(subscription_id=subscription_id)
+            if sub:
+                next_bill_date = request.form.get("next_bill_date")
+                if not next_bill_date:
+                    paddle_callback.failed_payment(sub, subscription_id)
+                    return "OK"
+
+                LOG.d(
+                    "Update subscription %s %s on %s, next bill date %s",
+                    subscription_id,
+                    sub.user,
+                    request.form.get("cancellation_effective_date"),
+                    sub.next_bill_date,
+                )
+                if (
+                    int(request.form.get("subscription_plan_id"))
+                    == PADDLE_MONTHLY_PRODUCT_ID
+                ):
+                    plan = PlanEnum.monthly
+                else:
+                    plan = PlanEnum.yearly
+
+                sub.cancel_url = request.form.get("cancel_url")
+                sub.update_url = request.form.get("update_url")
+                sub.event_time = arrow.now()
+                sub.next_bill_date = arrow.get(
+                    request.form.get("next_bill_date"), "YYYY-MM-DD"
+                ).date()
+                sub.plan = plan
+
+                # make sure to set the new plan as not-cancelled
+                sub.cancelled = False
+                emit_user_audit_log(
+                    user=sub.user,
+                    action=UserAuditLogAction.SubscriptionExtended,
+                    message="Extended Paddle subscription",
+                )
+
+                Session.commit()
+                execute_subscription_webhook(sub.user)
+            else:
+                LOG.w(
+                    f"update non-exist subscription {subscription_id}. {request.form}"
+                )
+                return "No such subscription", 400
+        elif request.form.get("alert_name") == "payment_refunded":
+            subscription_id = request.form.get("subscription_id")
+            LOG.d("Refund request for subscription %s", subscription_id)
+
+            sub: Subscription = Subscription.get_by(subscription_id=subscription_id)
+
+            if sub:
+                user = sub.user
+                Subscription.delete(sub.id)
+                emit_user_audit_log(
+                    user=user,
+                    action=UserAuditLogAction.SubscriptionCancelled,
+                    message="Paddle subscription cancelled as user requested a refund",
+                )
+                Session.commit()
+                LOG.e("%s requests a refund", user)
+                execute_subscription_webhook(sub.user)
+
+        elif request.form.get("alert_name") == "subscription_payment_refunded":
+            subscription_id = request.form.get("subscription_id")
+            sub: Subscription = Subscription.get_by(subscription_id=subscription_id)
+            LOG.d(
+                "Handle subscription_payment_refunded for subscription %s",
+                subscription_id,
+            )
+
+            if not sub:
+                LOG.w(
+                    "No such subscription for %s, payload %s",
+                    subscription_id,
+                    request.form,
+                )
+                return "No such subscription"
+
+            plan_id = int(request.form["subscription_plan_id"])
+            if request.form["refund_type"] == "full":
+                if plan_id in PADDLE_MONTHLY_PRODUCT_IDS:
+                    LOG.d("subtract 1 month from next_bill_date %s", sub.next_bill_date)
+                    sub.next_bill_date = sub.next_bill_date - relativedelta(months=1)
+                    LOG.d("next_bill_date is %s", sub.next_bill_date)
+                    Session.commit()
+                elif plan_id in PADDLE_YEARLY_PRODUCT_IDS:
+                    LOG.d("subtract 1 year from next_bill_date %s", sub.next_bill_date)
+                    sub.next_bill_date = sub.next_bill_date - relativedelta(years=1)
+                    LOG.d("next_bill_date is %s", sub.next_bill_date)
+                    Session.commit()
+                else:
+                    LOG.e("Unknown plan_id %s", plan_id)
+            else:
+                LOG.w("partial subscription_payment_refunded, not handled")
+            execute_subscription_webhook(sub.user)
+
+        return "OK"
+
+    @app.route("/paddle_coupon", methods=["GET", "POST"])
+    def paddle_coupon():
+        LOG.d("paddle coupon callback %s", request.form)
+
+        if not paddle_utils.verify_incoming_request(dict(request.form)):
+            LOG.e("request not coming from paddle. Request data:%s", dict(request.form))
+            return "KO", 400
+
+        product_id = request.form.get("p_product_id")
+        if product_id != PADDLE_COUPON_ID:
+            LOG.e("product_id %s not match with %s", product_id, PADDLE_COUPON_ID)
+            return "KO", 400
+
+        email = request.form.get("email")
+        LOG.d("Paddle coupon request for %s", email)
+
+        coupon = Coupon.create(
+            code=random_string(30),
+            comment="For 1-year coupon",
+            expires_date=arrow.now().shift(years=1, days=-1),
+            commit=True,
+        )
+
+        return (
+            f"Your 1-year coupon is <b>{coupon.code}</b> <br> "
+            f"It's valid until <b>{coupon.expires_date.date().isoformat()}</b>"
+        )

app/app/proton/proton_client.py

@@ -16,6 +16,7 @@ PROTON_ERROR_CODE_HV_NEEDED = 9001
 
 PLAN_FREE = 1
 PLAN_PREMIUM = 2
+PLAN_PREMIUM_LIFETIME = 3
 
 
 @dataclass
@@ -112,10 +113,13 @@ class HttpProtonClient(ProtonClient):
         if plan_value == PLAN_FREE:
             plan = SLPlan(type=SLPlanType.Free, expiration=None)
         elif plan_value == PLAN_PREMIUM:
+            expiration = info.get("PlanExpiration", "1")
             plan = SLPlan(
                 type=SLPlanType.Premium,
-                expiration=Arrow.fromtimestamp(info["PlanExpiration"], tzinfo="utc"),
+                expiration=Arrow.fromtimestamp(expiration, tzinfo="utc"),
             )
+        elif plan_value == PLAN_PREMIUM_LIFETIME:
+            plan = SLPlan(SLPlanType.PremiumLifetime, expiration=None)
         else:
             raise Exception(f"Invalid value for plan: {plan_value}")
 

app/app/proton/proton_partner.py

@@ -1,9 +1,8 @@
-from newrelic import agent
 from typing import Optional
 
 from app.db import Session
 from app.errors import ProtonPartnerNotSetUp
-from app.models import Partner, PartnerUser, User
+from app.models import Partner
 
 PROTON_PARTNER_NAME = "Proton"
 _PROTON_PARTNER: Optional[Partner] = None
@@ -22,14 +21,3 @@ def get_proton_partner() -> Partner:
 
 def is_proton_partner(partner: Partner) -> bool:
     return partner.name == PROTON_PARTNER_NAME
-
-
-def perform_proton_account_unlink(current_user: User):
-    proton_partner = get_proton_partner()
-    partner_user = PartnerUser.get_by(
-        user_id=current_user.id, partner_id=proton_partner.id
-    )
-    if partner_user is not None:
-        PartnerUser.delete(partner_user.id)
-    Session.commit()
-    agent.record_custom_event("AccountUnlinked", {"partner": proton_partner.name})

app/app/proton/proton_unlink.py

@@ -0,0 +1,36 @@
+from newrelic import agent
+
+from app.db import Session
+from app.events.event_dispatcher import EventDispatcher
+from app.events.generated.event_pb2 import EventContent, UserUnlinked
+from app.log import LOG
+from app.models import User, PartnerUser
+from app.proton.proton_partner import get_proton_partner
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+
+
+def can_unlink_proton_account(user: User) -> bool:
+    return (user.flags & User.FLAG_CREATED_FROM_PARTNER) == 0
+
+
+def perform_proton_account_unlink(current_user: User) -> bool:
+    if not can_unlink_proton_account(current_user):
+        return False
+    proton_partner = get_proton_partner()
+    partner_user = PartnerUser.get_by(
+        user_id=current_user.id, partner_id=proton_partner.id
+    )
+    if partner_user is not None:
+        LOG.info(f"User {current_user} has unlinked the account from {partner_user}")
+        emit_user_audit_log(
+            user=current_user,
+            action=UserAuditLogAction.UnlinkAccount,
+            message=f"User has unlinked the account (email={partner_user.partner_email} | external_user_id={partner_user.external_user_id})",
+        )
+        EventDispatcher.send_event(
+            partner_user.user, EventContent(user_unlinked=UserUnlinked())
+        )
+        PartnerUser.delete(partner_user.id)
+    Session.commit()
+    agent.record_custom_event("AccountUnlinked", {"partner": proton_partner.name})
+    return True

app/app/rate_limiter.py

@@ -30,7 +30,9 @@ def check_bucket_limit(
     try:
         value = lock_redis.incr(bucket_lock_name, bucket_seconds)
         if value > max_hits:
-            LOG.i(f"Rate limit hit for {bucket_lock_name} -> {value}/{max_hits}")
+            LOG.i(
+                f"Rate limit hit for {lock_name} (bucket id {bucket_id}) -> {value}/{max_hits}"
+            )
             newrelic.agent.record_custom_event(
                 "BucketRateLimit",
                 {"lock_name": lock_name, "bucket_seconds": bucket_seconds},

app/app/request_utils.py

@@ -0,0 +1,6 @@
+from random import randbytes
+from base64 import b64encode
+
+
+def generate_request_id() -> str:
+    return b64encode(randbytes(6)).decode()

app/app/sentry_utils.py

@@ -0,0 +1,21 @@
+from typing import Optional
+
+from sentry_sdk.types import Event, Hint
+
+_HTTP_CODES_TO_IGNORE = [416]
+
+
+def _should_send(_event: Event, hint: Hint) -> bool:
+    # Check if this is an HTTP Exception event
+    if "exc_info" in hint:
+        exc_type, exc_value, exc_traceback = hint["exc_info"]
+        # Check if it's a Werkzeug HTTPException (raised for HTTP status codes)
+        if hasattr(exc_value, "code") and exc_value.code in _HTTP_CODES_TO_IGNORE:
+            return False
+    return True
+
+
+def sentry_before_send(event: Event, hint: Hint) -> Optional[Event]:
+    if _should_send(event, hint):
+        return event
+    return None

app/app/session.py

@@ -87,6 +87,7 @@ class RedisSessionStore(SessionInterface):
         httponly = self.get_cookie_httponly(app)
         secure = self.get_cookie_secure(app)
         expires = self.get_expiration_time(app, session)
+        samesite = self.get_cookie_samesite(app)
         val = pickle.dumps(dict(session))
         ttl = int(app.permanent_session_lifetime.total_seconds())
         # Only 5 minutes for non-authenticated sessions.
@@ -109,6 +110,7 @@ class RedisSessionStore(SessionInterface):
             domain=domain,
             path=path,
             secure=secure,
+            samesite=samesite,
         )
 
 

app/app/subscription_webhook.py

@@ -1,33 +1,16 @@
-import requests
-from requests import RequestException
-
-from app import config
-from app.log import LOG
+from app.db import Session
+from app.events.event_dispatcher import EventDispatcher
+from app.events.generated.event_pb2 import EventContent, UserPlanChanged
 from app.models import User
 
 
 def execute_subscription_webhook(user: User):
-    webhook_url = config.SUBSCRIPTION_CHANGE_WEBHOOK
-    if webhook_url is None:
-        return
     subscription_end = user.get_active_subscription_end(
         include_partner_subscription=False
     )
     sl_subscription_end = None
     if subscription_end:
         sl_subscription_end = subscription_end.timestamp
-    payload = {
-        "user_id": user.id,
-        "is_premium": user.is_premium(),
-        "active_subscription_end": sl_subscription_end,
-    }
-    try:
-        response = requests.post(webhook_url, json=payload, timeout=2)
-        if response.status_code == 200:
-            LOG.i("Sent request to subscription update webhook successfully")
-        else:
-            LOG.i(
-                f"Request to webhook failed with statue {response.status_code}: {response.text}"
-            )
-    except RequestException as e:
-        LOG.error(f"Subscription request exception: {e}")
+    event = UserPlanChanged(plan_end_time=sl_subscription_end)
+    EventDispatcher.send_event(user, EventContent(user_plan_change=event))
+    Session.commit()

app/app/user_audit_log_utils.py

@@ -0,0 +1,44 @@
+from enum import Enum
+
+from app.models import User, UserAuditLog
+
+
+class UserAuditLogAction(Enum):
+    CreateUser = "create_user"
+    ActivateUser = "activate_user"
+    ResetPassword = "reset_password"
+
+    Upgrade = "upgrade"
+    SubscriptionExtended = "subscription_extended"
+    SubscriptionCancelled = "subscription_cancelled"
+    LinkAccount = "link_account"
+    UnlinkAccount = "unlink_account"
+
+    CreateMailbox = "create_mailbox"
+    VerifyMailbox = "verify_mailbox"
+    UpdateMailbox = "update_mailbox"
+    DeleteMailbox = "delete_mailbox"
+
+    CreateCustomDomain = "create_custom_domain"
+    VerifyCustomDomain = "verify_custom_domain"
+    UpdateCustomDomain = "update_custom_domain"
+    DeleteCustomDomain = "delete_custom_domain"
+
+    CreateDirectory = "create_directory"
+    UpdateDirectory = "update_directory"
+    DeleteDirectory = "delete_directory"
+
+    UserMarkedForDeletion = "user_marked_for_deletion"
+    DeleteUser = "delete_user"
+
+
+def emit_user_audit_log(
+    user: User, action: UserAuditLogAction, message: str, commit: bool = False
+):
+    UserAuditLog.create(
+        user_id=user.id,
+        user_email=user.email,
+        action=action.value,
+        message=message,
+        commit=commit,
+    )

app/app/user_settings.py

@@ -0,0 +1,78 @@
+from typing import Optional
+
+from app.db import Session
+from app.log import LOG
+from app.models import User, SLDomain, CustomDomain, Mailbox
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
+
+
+class CannotSetAlias(Exception):
+    def __init__(self, msg: str):
+        self.msg = msg
+
+
+class CannotSetMailbox(Exception):
+    def __init__(self, msg: str):
+        self.msg = msg
+
+
+def set_default_alias_domain(user: User, domain_name: Optional[str]):
+    if not domain_name:
+        LOG.i(f"User {user} has set no domain as default domain")
+        user.default_alias_public_domain_id = None
+        user.default_alias_custom_domain_id = None
+        Session.flush()
+        return
+
+    sl_domain: SLDomain = SLDomain.get_by(domain=domain_name)
+    if sl_domain:
+        if sl_domain.hidden:
+            LOG.i(f"User {user} has tried to set up a hidden domain as default domain")
+            raise CannotSetAlias("Domain does not exist")
+        if sl_domain.premium_only and not user.is_premium():
+            LOG.i(f"User {user} has tried to set up a premium domain as default domain")
+            raise CannotSetAlias("You cannot use this domain")
+        LOG.i(f"User {user} has set public {sl_domain} as default domain")
+        user.default_alias_public_domain_id = sl_domain.id
+        user.default_alias_custom_domain_id = None
+        Session.flush()
+        return
+    custom_domain = CustomDomain.get_by(domain=domain_name)
+    if not custom_domain:
+        LOG.i(
+            f"User {user} has tried to set up an non existing domain as default domain"
+        )
+        raise CannotSetAlias("Domain does not exist or it hasn't been verified")
+    if custom_domain.user_id != user.id or not custom_domain.verified:
+        LOG.i(
+            f"User {user} has tried to set domain {custom_domain} as default domain that does not belong to the user or that is not verified"
+        )
+        raise CannotSetAlias("Domain does not exist or it hasn't been verified")
+    LOG.i(f"User {user} has set custom {custom_domain} as default domain")
+    user.default_alias_public_domain_id = None
+    user.default_alias_custom_domain_id = custom_domain.id
+    Session.flush()
+
+
+def set_default_mailbox(user: User, mailbox_id: int) -> Mailbox:
+    mailbox: Optional[Mailbox] = Mailbox.get(mailbox_id)
+
+    if not mailbox or mailbox.user_id != user.id:
+        raise CannotSetMailbox("Invalid mailbox")
+
+    if not mailbox.verified:
+        raise CannotSetMailbox("This is mailbox is not verified")
+
+    if mailbox.id == user.default_mailbox_id:
+        return mailbox
+    LOG.i(f"User {user} has set mailbox {mailbox} as his default one")
+
+    user.default_mailbox_id = mailbox.id
+    emit_user_audit_log(
+        user=user,
+        action=UserAuditLogAction.UpdateMailbox,
+        message=f"Set mailbox {mailbox.id} ({mailbox.email}) as default",
+    )
+
+    Session.commit()
+    return mailbox

app/app/utils.py

@@ -1,4 +1,3 @@
-import random
 import re
 import secrets
 import string
@@ -32,8 +31,9 @@ def random_words(words: int = 2, numbers: int = 0):
     fields = [secrets.choice(_words) for i in range(words)]
 
     if numbers > 0:
-        digits = "".join([str(random.randint(0, 9)) for i in range(numbers)])
-        return "_".join(fields) + digits
+        digits = [n for n in range(10)]
+        suffix = "".join([str(secrets.choice(digits)) for i in range(numbers)])
+        return "_".join(fields) + suffix
     else:
         return "_".join(fields)
 

app/cron.py

@@ -14,8 +14,9 @@ from sqlalchemy.sql import Insert, text
 from app import s3, config
 from app.alias_utils import nb_email_log_for_mailbox
 from app.api.views.apple import verify_receipt
+from app.custom_domain_validation import CustomDomainValidation, is_mx_equivalent
 from app.db import Session
-from app.dns_utils import get_mx_domains, is_mx_equivalent
+from app.dns_utils import get_mx_domains
 from app.email_utils import (
     send_email,
     send_trial_end_soon_email,
@@ -58,9 +59,12 @@ from app.models import (
     ApiToCookieToken,
 )
 from app.pgp_utils import load_public_key_and_check, PGPException
-from app.proton.utils import get_proton_partner
+from app.proton.proton_partner import get_proton_partner
+from app.user_audit_log_utils import emit_user_audit_log, UserAuditLogAction
 from app.utils import sanitize_email
 from server import create_light_app
+from tasks.clean_alias_audit_log import cleanup_alias_audit_log
+from tasks.clean_user_audit_log import cleanup_user_audit_log
 from tasks.cleanup_old_imports import cleanup_old_imports
 from tasks.cleanup_old_jobs import cleanup_old_jobs
 from tasks.cleanup_old_notifications import cleanup_old_notifications
@@ -266,11 +270,13 @@ def notify_manual_sub_end():
                 "Your SimpleLogin subscription will end soon",
                 render(
                     "transactional/coinbase/reminder-subscription.txt",
+                    user=user,
                     coinbase_subscription=coinbase_subscription,
                     extend_subscription_url=extend_subscription_url,
                 ),
                 render(
                     "transactional/coinbase/reminder-subscription.html",
+                    user=user,
                     coinbase_subscription=coinbase_subscription,
                     extend_subscription_url=extend_subscription_url,
                 ),
@@ -280,8 +286,16 @@ def notify_manual_sub_end():
 
 def poll_apple_subscription():
     """Poll Apple API to update AppleSubscription"""
-    # todo: only near the end of the subscription
-    for apple_sub in AppleSubscription.all():
+    for apple_sub in (
+        AppleSubscription.filter(
+            AppleSubscription.expires_date < arrow.now().shift(days=15)
+        )
+        .enable_eagerloads(False)
+        .yield_per(100)
+    ):
+        if not apple_sub.is_valid():
+            # Subscription is not valid anymore and hasn't been renewed
+            continue
         if not apple_sub.product_id:
             LOG.d("Ignore %s", apple_sub)
             continue
@@ -826,10 +840,12 @@ def check_mailbox_valid_domain():
                         f"Mailbox {mailbox.email} is disabled",
                         render(
                             "transactional/disable-mailbox-warning.txt.jinja2",
+                            user=mailbox.user,
                             mailbox=mailbox,
                         ),
                         render(
                             "transactional/disable-mailbox-warning.html",
+                            user=mailbox.user,
                             mailbox=mailbox,
                         ),
                         retries=3,
@@ -884,6 +900,7 @@ def check_mailbox_valid_pgp_keys():
                 f"Mailbox {mailbox.email}'s PGP Key is invalid",
                 render(
                     "transactional/invalid-mailbox-pgp-key.txt.jinja2",
+                    user=mailbox.user,
                     mailbox=mailbox,
                 ),
                 retries=3,
@@ -891,6 +908,24 @@ def check_mailbox_valid_pgp_keys():
 
 
 def check_custom_domain():
+    # Delete custom domains that haven't been verified in a month
+    for custom_domain in (
+        CustomDomain.filter(
+            CustomDomain.verified == False,  # noqa: E712
+            CustomDomain.created_at < arrow.now().shift(months=-1),
+        )
+        .enable_eagerloads(False)
+        .yield_per(100)
+    ):
+        alias_count = Alias.filter(Alias.custom_domain_id == custom_domain.id).count()
+        if alias_count > 0:
+            LOG.warn(
+                f"Custom Domain {custom_domain} has {alias_count} aliases. Won't delete"
+            )
+        else:
+            LOG.i(f"Deleting unverified old custom domain {custom_domain}")
+            CustomDomain.delete(custom_domain.id)
+
     LOG.d("Check verified domain for DNS issues")
 
     for custom_domain in CustomDomain.filter_by(verified=True):  # type: CustomDomain
@@ -900,9 +935,11 @@ def check_custom_domain():
             LOG.i("custom domain has been deleted")
 
 
-def check_single_custom_domain(custom_domain):
+def check_single_custom_domain(custom_domain: CustomDomain):
     mx_domains = get_mx_domains(custom_domain.domain)
-    if not is_mx_equivalent(mx_domains, config.EMAIL_SERVERS_WITH_PRIORITY):
+    validator = CustomDomainValidation(dkim_domain=config.EMAIL_DOMAIN)
+    expected_custom_domains = validator.get_expected_mx_records(custom_domain)
+    if not is_mx_equivalent(mx_domains, expected_custom_domains):
         user = custom_domain.user
         LOG.w(
             "The MX record is not correctly set for %s %s %s",
@@ -924,6 +961,7 @@ def check_single_custom_domain(custom_domain):
                 f"Please update {custom_domain.domain} DNS on SimpleLogin",
                 render(
                     "transactional/custom-domain-dns-issue.txt.jinja2",
+                    user=user,
                     custom_domain=custom_domain,
                     domain_dns_url=domain_dns_url,
                 ),
@@ -959,7 +997,7 @@ def delete_expired_tokens():
     LOG.d("Delete api to cookie tokens older than %s, nb row %s", max_time, nb_row)
 
 
-async def _hibp_check(api_key, queue):
+async def _hibp_check(api_key: str, queue: asyncio.Queue):
     """
     Uses a single API key to check the queue as fast as possible.
 
@@ -978,11 +1016,16 @@ async def _hibp_check(api_key, queue):
         if not alias:
             continue
         user = alias.user
-        if user.disabled or not user.is_paid():
+        if user.disabled or not user.is_premium():
             # Mark it as hibp done to skip it as if it had been checked
             alias.hibp_last_check = arrow.utcnow()
             Session.commit()
             continue
+        if alias.flags & Alias.FLAG_PARTNER_CREATED > 0:
+            # Mark as hibp done
+            alias.hibp_last_check = arrow.utcnow()
+            Session.commit()
+            continue
 
         LOG.d("Checking HIBP for %s", alias)
 
@@ -1070,6 +1113,7 @@ def get_alias_to_check_hibp(
             Alias.id >= min_alias_id,
             Alias.id < max_alias_id,
             User.disabled == False,  # noqa: E712
+            User.enable_data_breach_check,
             or_(
                 User.lifetime,
                 ManualSubscription.end_at > now,
@@ -1208,7 +1252,7 @@ def notify_hibp():
 
 
 def clear_users_scheduled_to_be_deleted(dry_run=False):
-    users = User.filter(
+    users: List[User] = User.filter(
         and_(
             User.delete_on.isnot(None),
             User.delete_on <= arrow.now().shift(days=-DELETE_GRACE_DAYS),
@@ -1220,6 +1264,11 @@ def clear_users_scheduled_to_be_deleted(dry_run=False):
         )
         if dry_run:
             continue
+        emit_user_audit_log(
+            user=user,
+            action=UserAuditLogAction.DeleteUser,
+            message=f"Delete user {user.id} ({user.email})",
+        )
         User.delete(user.id)
         Session.commit()
 
@@ -1231,6 +1280,16 @@ def delete_old_data():
     cleanup_old_notifications(oldest_valid)
 
 
+def clear_alias_audit_log():
+    oldest_valid = arrow.now().shift(days=-config.AUDIT_LOG_MAX_DAYS)
+    cleanup_alias_audit_log(oldest_valid)
+
+
+def clear_user_audit_log():
+    oldest_valid = arrow.now().shift(days=-config.AUDIT_LOG_MAX_DAYS)
+    cleanup_user_audit_log(oldest_valid)
+
+
 if __name__ == "__main__":
     LOG.d("Start running cronjob")
     parser = argparse.ArgumentParser()
@@ -1239,22 +1298,6 @@ if __name__ == "__main__":
         "--job",
         help="Choose a cron job to run",
         type=str,
-        choices=[
-            "stats",
-            "notify_trial_end",
-            "notify_manual_subscription_end",
-            "notify_premium_end",
-            "delete_logs",
-            "delete_old_data",
-            "poll_apple_subscription",
-            "sanity_check",
-            "delete_old_monitoring",
-            "check_custom_domain",
-            "check_hibp",
-            "notify_hibp",
-            "cleanup_tokens",
-            "send_undelivered_mails",
-        ],
     )
     args = parser.parse_args()
     # wrap in an app context to benefit from app setup like database cleanup, sentry integration, etc
@@ -1303,4 +1346,10 @@ if __name__ == "__main__":
             load_unsent_mails_from_fs_and_resend()
         elif args.job == "delete_scheduled_users":
             LOG.d("Deleting users scheduled to be deleted")
-            clear_users_scheduled_to_be_deleted(dry_run=True)
+            clear_users_scheduled_to_be_deleted()
+        elif args.job == "clear_alias_audit_log":
+            LOG.d("Clearing alias audit log")
+            clear_alias_audit_log()
+        elif args.job == "clear_user_audit_log":
+            LOG.d("Clearing user audit log")
+            clear_user_audit_log()

app/crontab.yml

@@ -14,15 +14,28 @@ jobs:
   - name: SimpleLogin Custom Domain check
     command: python /code/cron.py -j check_custom_domain
     shell: /bin/bash
-    schedule: "15 2 * * *"
+    schedule: "15 */4 * * *"
     captureStderr: true
+    concurrencyPolicy: Forbid
+    onFailure:
+      retry:
+        maximumRetries: 10
+        initialDelay: 1
+        maximumDelay: 30
+        backoffMultiplier: 2
 
   - name: SimpleLogin HIBP check
     command: python /code/cron.py -j check_hibp
     shell: /bin/bash
-    schedule: "15 3 * * *"
+    schedule: "13 */4 * * *"
     captureStderr: true
     concurrencyPolicy: Forbid
+    onFailure:
+      retry:
+        maximumRetries: 10
+        initialDelay: 1
+        maximumDelay: 30
+        backoffMultiplier: 2
 
   - name: SimpleLogin Notify HIBP breaches
     command: python /code/cron.py -j notify_hibp
@@ -31,6 +44,7 @@ jobs:
     captureStderr: true
     concurrencyPolicy: Forbid
 
+
   - name: SimpleLogin Delete Logs
     command: python /code/cron.py -j delete_logs
     shell: /bin/bash
@@ -80,3 +94,17 @@ jobs:
     schedule: "*/5 * * * *"
     captureStderr: true
     concurrencyPolicy: Forbid
+
+  - name: SimpleLogin clear alias_audit_log old entries
+    command: python /code/cron.py -j clear_alias_audit_log
+    shell: /bin/bash
+    schedule: "0 * * * *" # Once every hour
+    captureStderr: true
+    concurrencyPolicy: Forbid
+
+  - name: SimpleLogin clear user_audit_log old entries
+    command: python /code/cron.py -j clear_user_audit_log
+    shell: /bin/bash
+    schedule: "0 * * * *" # Once every hour
+    captureStderr: true
+    concurrencyPolicy: Forbid