Thunderbird Beta for Testers

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4.2
1.76K reviews
Content rating
Everyone
100K+
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About this app

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.

Updated on
Jul 28, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Messages and 7 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

1.66K reviews
Ryan Camaratta
June 7, 2026
For those who don't know, check out Thunderbird's mission/Mozilla's mission and read up a little bit. Open standards and protocols, accessible and open web, completely open source, transparent, you can vote on features and view public roadmaps of what devs are working on and implementing And the holy grail: they don't mine or sell any data App is clean and modern and supports any email address you need it to, no bugs or crashes, no ads, no promotions, no AI - perfect
13 people found this review helpful
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Mozilla Thunderbird
June 8, 2026
Thanks so much for the kind words, that means a whole lot. :) Have a great rest of the week and we hope you continue to enjoy using Thunderbird!
Keith Horenstein
October 11, 2024
As mentioned won't port k-9 settings, but it auto-recognized the right configuration. Really easy. Only using for a few days, the big issue for me is visual. It's hard to see the difference between read and unread messages. Not enough contrast or difference. K-9 used line shading, easy to see. Sort of annoying to be wondering if I read a note or not. Also when reading an individual message, I need larger font. Sometimes the message won't render right. Can't recall that happening with k9.
11 people found this review helpful
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HiMyNameIsTopher
October 22, 2024
I switched to this from Samsung Mail, and while this definitely feels like a beta because it runs pretty slow, freezing, and laggy on my S24 Ultra with 20,000+ emails. This is highly customizable in a way Samsung Mail wasn't and should have been, even though it's slower. In terms of organizing, it's better. Sadly I found that it often doesn't retrieve new emails if I don't do it manually. All of these can be resolved in time though and I will update once it's no longer in beta.
14 people found this review helpful
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What’s new

Thunderbird version 22.0b2

Fixed:
- Could not empty the Trash folder using the Empty Trash action
Content rating
Everyone
Users Interact
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App support

About the developer
MZLA TECHNOLOGIES CORPORATION
mobile-appstore-admin@thunderbird.net
447 Sutter St San Francisco, CA 94108-4601 United States
+1 650-910-8704

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