Thunderbird Beta for Testers

Thunderbird Beta for Testers

Mozilla Thunderbird·4.3 ★·FREE

Screenshots

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Description

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 https://github.com/thunderbird/thunderbird-android.

We’re always happy to welcome new developers, designers, documenters, translators, bug triagers and friends. Visit us at https://thunderbird.net/participate to get started.

What you can do
Thunderbird 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. Supported solely by financial contributions from our users, so you never have to see ads mixed in with your emails again.

What you can do



  • Ditch multiple apps and webmail. Use one app, with an optional Unified Inbox, to power through your day.

  • Enjoy a privacy-friendly email client that never collects or sells your personal data. We directly connect you to your email provider. That’s it!

  • Take your privacy to the next level by using OpenPGP email encryption (PGP/MIME) with the “OpenKeychain” app, to encrypt and decrypt your messages.

  • Choose to sync your email instantly, at set intervals, or on-demand. However you want to check your email, it’s up to you!

  • Find your important messages using both local and server-side search.



Compatibility



  • Thunderbird works with IMAP and POP3 protocols, supporting a wide range of email providers, including Gmail, Outlook, Yahoo Mail, iCloud, and more.



Why use Thunderbird



  • The trusted name in email for over 20 years - now on Android.

  • Thunderbird is fully funded by voluntary contributions from our users. We don’t mine your personal data. You are never the product.

  • Made by a team that is as efficiency-minded as you are. We want you to spend minimal time using the app while getting maximum in return.

  • With contributors from all over the world, Thunderbird for Android has been translated into more than 20 languages.

  • Supported by MZLA Technologies Corporation, a wholly owned subsidiary of the Mozilla Foundation.



Open Source and Community



  • Thunderbird is free and open source, which means its code is available to see, modify, use and share freely. Its license also ensures that it will be free forever. You can think of Thunderbird as a gift from thousands of contributors to you.

  • We develop in the open with regular, transparent updates on our blog and mailing lists.

  • Our user support is powered by our global community. Find the answers you need, or step into the role of a contributor - whether it’s answering questions, translating the app, or telling your friends and family about Thunderbird.

Developer

Mozilla Thunderbird

Developer ID: 8696262544613553264

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Ratings & Reviews

4.3

1,820 ratings

100,000+ downloads

5★
61%
4★
15%
3★
15%
2★
3%
1★
5%

Recent Reviews

Mike MD

v25.0b1

Luv the bird

Oct 10, 2026

Vince B

v24.0b2

app works but it doesn't synchronize properly at all. you have to wait a long time before new messages come as a notification. it only synchronizes when you manually open the app and force a refresh

Developer Response

Sorry the sync is slow. Push email is off by default and only works with IMAP. This guide covers it: https://support.mozilla.org/kb/configure-push-email-thunderbird-android If it still lags, please send your phone model, Android version, app version and IMAP or POP through Settings > Get Help in the app.

Oct 7, 2026

Oct 6, 2026

Ross Barrett

v24.0b2

Just installed Thunderbird Beta but when I found that it cannot do filters I decided to stay with edison mail. no point changing if I still won't have filters. uninstalling Thunderbird.

Oct 5, 2026

Zen Deb

v24.0b2

Switched from Bluemail and I'm liking it so far. Setup was easy and functions work well. Overall pleased with the app and happy i switched. It would be nice to have unified trash and spam folders, that would really speed things up. Thanks developers, for making the transition so easy.

Oct 4, 2026

Christian Dysthe

v24.0b2

This is a perfectly executed email app for Android. I do however miss a feature. Unified Trash and Spam for all accounts. Otherwise pure Android email bliss. And the fact that it can be set up directly from my desktop Thunderbird client with a couple of clicks is awesome.

Developer Response

Thanks so much for your kind review! I hope you continue to keep enjoying Thunderbird.

Sep 30, 2026

Sep 26, 2026

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