Thunderbird: Free Your Inbox

In-app purchases
9.84K reviews
Content rating
Rated for 12+
1M+
Downloads
Content rating
Rated for 12+
Parental Guidance Recommended
Users Interact, In-App Purchases
Learn more
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About this app

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.

Thunderbird is a 100% open source, privacy focused email app.
Updated on
Sep 22, 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

9.2K reviews
Codey Jackson tax
August 20, 2026
this app has been a real let down so far. I'm a long time Thunderbird desktop user and I've been waiting on an Android version for years. I've been using this for a few months now and I'm about ready to go back to my phone's default email app. I'm constantly having emails not send and the UI really could be better. hopefully improvements come later.
1 person found this review helpful
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Mozilla Thunderbird
September 8, 2026
While we are working on improving and refactoring our message sync, be sure to check your app has unrestricted battery access to enable background sync! You can check this by long pressing the app icon, tapping the info icon, and tapping 'Battery'
Karl Franz
December 20, 2024
I really wanted to keep Thunderbird as my main email client but I just can't. App is unusable because notifications don't work. I did a bit of research to figure out but it seems like it's a common issue for so many users. Polling notification doesn't work at all. When I turn on push notifications, then I get a constant notification of "waiting for new emails" that I can't get rid of. Even though it has the best UI, app is simply unsable
25 people found this review helpful
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Mozilla Thunderbird
January 2, 2025
We're so sorry you're having issues with notifications, whether push or polling. It seems like you may have found some of the issues on our GitHub (https://github.com/thunderbird/thunderbird-android/issues), and if you haven't opened a new issue that may be the best option, to provide details and get feedback from our team and volunteers.
Oscar Murakami-Smith
November 9, 2024
Really on board for this app! I've had so many issues with so many apps but I think I might finally be able to settle. Only one bit of feedback I'd really liked implemented—RTF or html signatures! I want my signature to be the same as it is on my desktop, where I've gone to the trouble of making a nice html signature but no matter how hard I try (including importing settings from TB desktop, pasting from existing formatted text) this app de-formats my signature to pure text with no formatting.
121 people found this review helpful
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What’s new

Thunderbird version 23.1

Fixed:
- Attachment filenames with non-ASCII characters were incorrectly decoded and saved
Content rating
Rated for 12+
Parental Guidance Recommended
Users Interact, In-App Purchases
Learn more

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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