LibreMail/app/src/main/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- SPDX-License-Identifier: GPL-3.0-or-later -->
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />

    <!-- Android Backup is opt-in and OFF by default (issue #21). allowBackup can't be toggled at
         runtime, so LibreMailBackupAgent gates it on the "Include settings in Android Backup"
         preference: with backup disabled the agent ships nothing. When enabled, only the settings
         DataStore is backed up per the allowlist in data_extraction_rules (API 31+) /
         backup_rules (API 29-30) — never credentials, the mail cache, or the Keystore-sealed cache
         passphrase. fullBackupOnly keeps this to Auto Backup (full-data) only. -->
    <application
        android:name=".LibreMailApplication"
        android:allowBackup="true"
        android:backupAgent=".backup.LibreMailBackupAgent"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:fullBackupOnly="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.LibreMail">

        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:label="@string/app_name"
            android:theme="@style/Theme.LibreMail">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

            <!-- Handle mailto: links tapped in browsers and other apps (ACTION_VIEW), which is also
                 what makes LibreMail appear on the system "Open by default" / default-apps screen
                 where the platform exposes an email association. Android has no public RoleManager
                 email role, so becoming the system default is OEM-dependent — hence "where supported". -->
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="mailto" />
            </intent-filter>

            <!-- "Send email to <address>" targets from other apps (contacts, dialer, etc.). -->
            <intent-filter>
                <action android:name="android.intent.action.SENDTO" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />
                <data android:scheme="mailto" />
            </intent-filter>

            <!-- Share-to-email: text and RFC-822 email payloads with recipients/subject/body extras. -->
            <intent-filter>
                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="text/plain" />
                <data android:mimeType="message/rfc822" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SEND_MULTIPLE" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="message/rfc822" />
            </intent-filter>
        </activity>

        <!-- WorkManager is initialized on-demand via Configuration.Provider, so remove the
             default automatic initializer. -->
        <provider
            android:name="androidx.startup.InitializationProvider"
            android:authorities="${applicationId}.androidx-startup"
            android:exported="false"
            tools:node="merge">
            <meta-data
                android:name="androidx.work.WorkManagerInitializer"
                android:value="androidx.startup"
                tools:node="remove" />
        </provider>

        <!-- Holds a long-lived IMAP IDLE connection for instant push (opt-in via Advanced Settings). -->
        <service
            android:name=".push.IdleService"
            android:exported="false"
            android:foregroundServiceType="dataSync" />

        <!-- Shares downloaded attachments with viewer apps via a content:// URI. -->
        <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths" />
        </provider>

        <!-- Captures the Microsoft OAuth redirect for Outlook sign-in. AppAuth's bundled manifest
             already declares RedirectUriReceiverActivity with an intent-filter for
             ${appAuthRedirectScheme}, which build.gradle.kts sets to the Outlook scheme
             (org.libremail.outlook); the redirect URI org.libremail.outlook://oauth2redirect must
             be registered as a public-client (mobile/desktop) redirect in the Azure app
             registration. We only merge a theme onto that activity here: AppAuth declares no theme
             and RedirectUriReceiverActivity extends AppCompatActivity, so without an AppCompat theme
             it inherits the app's Theme.Material shell and crashes ("You need to use a Theme.AppCompat
             theme") when the redirect launches it. We reuse the translucent theme AppAuth itself
             applies to AuthorizationManagementActivity. -->
        <activity
            android:name="net.openid.appauth.RedirectUriReceiverActivity"
            android:exported="true"
            android:theme="@style/Theme.AppCompat.Translucent.NoTitleBar"
            tools:node="merge" />
    </application>
</manifest>