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K-9 Mail

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Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 6.801 (38001) suggested Added on Mar 16, 2024

    This version requires Android 5.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • read sync settings
      Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • run foreground service
      Allows the app to make use of foreground services.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you\u2019re not actively using the device.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • com.fsck.k9.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log

  • Version 6.800 (38000) - Added on Mar 09, 2024

    This version requires Android 5.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • read sync settings
      Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • run foreground service
      Allows the app to make use of foreground services.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you\u2019re not actively using the device.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • com.fsck.k9.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log

  • Version 6.717 (37017) - Added on Feb 19, 2024

    This version requires Android 5.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • read sync settings
      Allows the app to read the sync settings for an account. For example, this can determine whether the People app is synced with an account.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • run foreground service
      Allows the app to make use of foreground services.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you\u2019re not actively using the device.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • com.fsck.k9.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log