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Briar Mailbox

Receive encrypted messages while Briar is offline
Briar Mailbox is a helper app for Briar messenger (org.briarproject.briar.android) that lets you receive encrypted messages from your contacts while Briar is offline.

Next time Briar comes online it will automatically fetch the messages from your Mailbox.

Install the Mailbox app on a spare device, link it with your Briar account, and leave it connected to power and Wi-Fi.

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Versions

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 1.0.9 (10009) suggested Added on Aug 12, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 4.3 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • run foreground service
      Allows the app to make use of foreground services.
    • 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.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • org.briarproject.mailbox.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 51 MiB PGP Signature | Build Log

  • Version 1.0.8 (10008) - Added on Apr 12, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 4.3 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • run foreground service
      Allows the app to make use of foreground services.
    • 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.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • org.briarproject.mailbox.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 42 MiB PGP Signature | Build Log