Thunderbird: Free Your Inbox

In-app purchases
3.5
5.31K reviews
500K+
Downloads
Content rating
Everyone
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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.

Updated on
Jul 15, 2025

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

3.6
4.99K reviews
Alex Schendel
18 August 2025
Recently switched from Gmail and I'm liking it so far! Sure, it doesn't have Google's special mail integration that seems to not require infrequent polling, but it works perfectly well for me. I like the option to have a unified inbox so I rarely ever have to switch accounts. I also really appreciate that Mozilla is always very communicative regarding feedback.
2 people found this review helpful
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d p
24 July 2025
i thought i liked this email client at first, but not so much now. I've been intermittently getting error messages saying that the message failed to send when I'm trying to email attachments. they sit in the outbox, and then i open it, and it says message deleted, or sometimes it just removes the attachment after sending. since this is for work, i can't afford the time to troubleshoot why this keeps happening, so I'm moving on.
10 people found this review helpful
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Mozilla Thunderbird
30 July 2025
Thanks for your feedback, and we're sorry for the frustrations with messages being stuck in the outbox (a possible solution is in 11.0) and with attachments disappearing. While we'd love to help troubleshoot at Settings > Get Help, we hope you try us again as we improve!
K Hindall
16 August 2025
I love the Mac version, but I just found out I've been "sending" for six weeks with this app, the messages go in the Sent folder, and nothing is getting outside my domain! I can't access a log to see what is wrong. It's not my ISP; my sister's mail (iOS, but same domain) is working fine. I also find the help system confusing to use. I hate to go corporate, but I must be able to send mail. Just receiving isn't good enough.
1 person found this review helpful
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Mozilla Thunderbird
21 August 2025
We're so sorry this is happening, and we'd like to understand what's happening! We do have a fix in 11.1 to deal with one cause of this problem. For more detailed troubleshooting, please go to Settings > Get help to register for an account and open a support question!

What's new

Thunderbird for Android version 10.1, based on K-9 Mail. Changes include:
- Attach all images when sharing from gallery, not just the last
- Show the full changelog when it contains special characters