Download Thunderbird Beta for Testers APK 13.0b2 arm64-v8a, armeabi-v7a, x86, x86_64 · Android 21+

Fixed:
On IMAP servers with folder prefixes, some folder operations stopped working
Contributors:
Thank you to
@wmontwe
Full Changelog:
THUNDERBIRD_13_0b1...THUNDERBIRD_13_0b2

Thunderbird for Android

Thunderbird for Android is a powerful, privacy-focused email app. Effortlessly manage multiple email accounts from one app, with a Unified Inbox option for maximum productivity. Built on open-source technology and supported by a dedicated team of developers alongside a global community of volunteers, Thunderbird never treats your private data as a product.

Thunderbird for Android is based on K-9 Mail, which comes with a rich history of success and functionality in open source email.

Download

Thunderbird for Android can be downloaded from a couple of sources:

Thunderbird on

Google Play

or

F-Droid

Thunderbird Beta on

Google Play

or

F-Droid

Github Releases

FFUpdater

allows installing the latest versions from ftp.mozilla.org

By using Thunderbird for Android Beta, you have early access to current development and are able to try new features earlier.

Check out the

Release Notes

to find out what changed in each version of Thunderbird for Android.

The SHA-256 fingerprints for our signing certificates are available in

SECURITY.md

.

Need Help? Found a bug? Have an idea? Want to chat?

If the app is not behaving like it should, or you are not sure if you've encountered a bug:

Check out our

knowledge base

and

frequently asked questions

Ask a question on our

support forum

If you are certain you've identified a bug in Thunderbird for Android and would like to help fix it:

File an issue on

our GitHub issue tracker

If you have an idea how to improve Thunderbird for Android:

Tell us about and vote on your feature ideas on

connect.mozilla.org

.

Join the discussion about the latest changes in the

Thunderbird Android Beta Topicbox

.

The Thunderbird Community uses Matrix to communicate:

General chat about Thunderbird for Android and K-9 Mail:

#tb-android:mozilla.org

Development and other ways to contribute:

#tb-android-dev:mozilla.org

Reach the broader Thunderbird Community in the

community space

Contributing

We welcome contributions from everyone.

Development: Have you done a little bit of Kotlin? The

CONTRIBUTING

guide will help you get started

Translations: Do you speak a language aside from English?

Translating is easy

and just takes a few minutes for your first success.

We have

a number of other contribution opportunities

available.

Thunderbird is supported solely by financial contributions from users like you.

Make a financial contribution today

!

Make sure to check out the

Mozilla Community Participation Guidelines

.

Architecture Decision Records (ADR)

We use

Architecture Decision Records

to document the architectural decisions made in the development of Thunderbird for Android. You can find them in the

docs/architecture/adr

directory.

For more information about our ADRs, please see the

ADRs README

.

We encourage team members and contributors to read through our ADRs to understand the architectural decisions that have shaped this project so far. Feel free to propose new ADRs or suggest modifications to existing ones as needed.

K-9 Mail

In June 2022,

K-9 Mail joined the Thunderbird family

as the foundation for Thunderbird on Android. Since then, we’ve been updating both apps to give users the same solid experience, so it’s normal to notice that K-9 Mail and Thunderbird look and feel nearly identical. They’re built on the same code, and that’s intentional. You'll notice some features are selectively enabled for Thunderbird as opposed to K-9 Mail, usually when they are simply a better fit for Thunderbird (like the import from K-9 functionality).

If you prefer the robot dog and would like to keep K-9 Mail around, you can find it here:

K-9 Mail on Google Play

K-9 Mail on F-Droid

Forking

If you want to use a fork of this project please ensure that you replace the OAuth client setup in the

app-k9mail/src/{debug,release}/kotlin/app/k9mail/auth/K9OAuthConfigurationFactory.kt

and

app-thunderbird/src/{debug,daily,beta,release}/kotlin/net/thunderbird/android/auth/TbOAuthConfigurationFactory.kt

with your own OAuth client setup and ensure that the

redirectUri

is different to the one used in the main project. This is to prevent conflicts with the main app when both are installed on the same device.

License

Thunderbird for Android is licensed under the

Apache License, Version 2.0

.