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Thunderbird Beta for Testers

Thunderbird Beta for Testers is a free, open-source email app for Android. Thunderbird is a 100% open source, privacy focused email app. It has 14,192 GitHub stars and is released under the Apache-2.0 license, and you can install it from F-Droid and Google Play.

github.com/thunderbird/thunderbird-android (opens in a new tab)

Data as of from the GitHub API and the F-Droid index; description from the project's repository or F-Droid listing. Report an error

Get it on F-Droid (opens in a new tab)Google Play (opens in a new tab)View on GitHub (opens in a new tab)

About Thunderbird Beta for Testers

Help make the next Thunderbird release as awesome as possible by downloading Thunderbird Beta and getting early access to the latest features and bug fixes before they're officially released. Your testing and feedback are important, so please report bugs, rough edges, and share your thoughts with us! Find our bug tracker, source code, and wiki at We’re always happy to welcome new developers, designers, documenters, translators, bug triagers and friends. Visit us at to get started. Thunderbird is a powerful, privacy-focused email app. Effortlessly manage multiple email accounts from one app, with a Unified Inbox option for maximum productivity.

Privacy and F-Droid

F-Droid builds Thunderbird Beta for Testers from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.

No anti-features flagged on the latest F-Droid build.

Screenshots

  • Thunderbird Beta for Testers screenshot 1
  • Thunderbird Beta for Testers screenshot 2
  • Thunderbird Beta for Testers screenshot 3

Screenshots from the app's F-Droid listing.

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FAQ

Thunderbird Beta for Testers FAQ

Still curious? Email info@appsgit.com.

Is Thunderbird Beta for Testers free and open source?

Yes. Thunderbird Beta for Testers's source code is public on GitHub under the Apache-2.0 license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.

How do I install Thunderbird Beta for Testers?

You can install Thunderbird Beta for Testers from F-Droid (package net.thunderbird.android.beta) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: K9MAIL_24_0).

Is Thunderbird Beta for Testers still maintained?

The repository's most recent commit was on Nov 6, 2026. Its F-Droid listing was last updated on Oct 25, 2026. appsgit only lists apps whose repository had a commit in the last six months.