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Thunderbird: Free Your Inbox

September 18, 2025

More About Thunderbird: Free Your Inbox

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.

Latest Version

Version
11.1
Update
September 18, 2025
Developer
Mozilla Thunderbird
Platforms
Android
Downloads
981,294
License
Free
Package Name
net.thunderbird.android
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User Reviews

Alexander Stanton

8 months ago

1 week in and I am really enjoying it. Sorting email is snappy and quick. No bells and whistles. No ads. Clean presentation. My only gripe so far is it takes too many clicks to refile/move emails. Otherwise this quickly became my main email app, just like its desktop counterpart. Mozilla continues to make quality for anyone and everyone who needs it for simply running on donations. Bravo.

N U

9 months ago

Absolutely the best email app on Google Play. I switched from Samsung Mail to K9, but didn't like it much. Soon after, Thunderbird by Mozilla came out. Since I use Firefox and trust Mozilla, I gave it a try. For those of you looking for push notifications to sync your emails faster, follow these steps: 1. Tap the hamburger menu in the upper left corner. 2. Tap 'Manage Folders' in the lower left corner. 3. Tap 'Inbox' in the upper left corner. 4. You can set up push notifications in each menu.

William Ratcliffe (Wil)

6 months ago

Edit: if you have issues with outlook, view Developer's comment below to enable imap in outlook. I had to use a mobile desktop to get Imap to save when enabling Had to force close and re-open several times to get the unified inbox to work. Almost uninstalled cause I thought it wasn't available. Also, can't get my outlook email to work. Maybe d up having to switch because of that. Please keep up the good work would love to give 5 stars!

Jay Sinnett

4 months ago

I've been using TBird on my desktop for over a decade, and love it. But if the Android version supports Folders I can't figure out how to do it. I specifically wanted to store the emails confirming travel plans in a Folder so they're easy to find and won't drop off the end of the mail list before my trip starts. Please, devs, either add the ability to create folders or to import folders from my existing desktop (and use them).

Robert K

5 months ago

Overall the app works fine. If you are using it on multiple email accounts, the lack of a unified trash folder is a deal breaker. You have to expand each account and open the trash folder to see if there is anything in it. The option to show an indicator on folders with something in them would be good ..not just on unread inbox folders.

Oscar Smith

10 months ago

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.

Steve B

6 months ago

Having just converted my desktop to Thunderbird to replace the awful 'new outlook', I installed the T-bird mobile app on my Android. Using the QR was seamless and a really great feature and I like the interface and range of options. Sadly, that's where my praise ends because it won't sync or push emails. Even when I can see an email on my desktop there's nothing on my phone, no notification on the screen or app icon. Even manually refreshing the inbox several times doesn't work = disappointing.

Mark Barnes

8 months ago

Like many others, I have been using Thunderbird on my desktop for many years. More than 20. I tried this Android version (I previously tried its K-9 precursor) and I am quite disappointed. There is one missing feature that is an absolute deal-breaker for me: You cannot expand and/or collapse folders. Every one of my folders is displayed in one very long list. I will keep using something else until they implement this.

David Jr

8 months ago

editing my review from 5 to 4 star solely for the reason that it doesn't sync all of my emails. It doesn't retrieve any of my daily subscription emails, yet I get them on other clients. It's also a bit slow on the retrieval too. Not sure what's happening here, because I really do like the customization. It just needs more work to be fully functioning

Jenn's Bowtique

5 months ago

New issue w/ emails not downloading. Noticed a couple weeks ago but it is becoming more frequent. Sometimes it's 24 hrs before an email will come through in app that does come through on desktop. When out and relying on phone this is a big problem, especially w/ 2FA. Addl ssue w/ unified inbox not showing email from all accounts. Sent an email to support and received a response that they can't respond to emails. Useless.

Descending Angel

5 months ago

UI is nice & clean, push notifications work like it's supposed to, but polling doesn't work at all. No matter what interval I set for the app to go out & get mail it won't do it unless I manually refresh the app. This really needs to be fixed because I don't need the app to constantly be checking for mail, just every 30 minutes or so. Having push on all the time is eating away at battery life.

Karma Cool

3 months ago

As someone who has been using desktop Thunderbird for roughly a decade, I was excited to try this out. But the janky push notification system is a deal breaker. I've set up both messages and folder push notifications and even disabled battery restrictions, but it seems to take too long for a push notification to appear (aka more than 5 minutes after the message comes into the mailbox). For reference, desktop Thunderbird and Spark for Android notify near instantaneously.

Andrew Alquisira Sr.

3 months ago

Update 6/8/25: I really wanted to like this but it's TRASH. Set refresh to every 15 minutes but it can go HOURS WITHOUT ANY NOTIFICATION! So far so good. Nice UI, simple and clean. It would be nice if we could get the emails as soon as they arrive in the inbox. I have it set to every 15 minutes but it doesn't seem very consistent. Update:3/19/25 When adding certain contacts to an email, they show up as +1. How do I fix this?

Roman Dziubak

5 months ago

Have edited my review regarding push notifications. There is a roundabout way of doing it. It's very unclear when installing the app. Your team needs a better way to set up the app for new users. Whole point of email is to receive email and know it's there. When installing the app... No notifications are even active. The complete opposite of what a user wants. You shouldn't have to dig through menus to setup notifications.

Don McDade

2 months ago

The format of the account list should be changed to show account name, not just a meaningless symbol. Need to be able to open an attachment from the top of the email or a menu. Some emails have large amounts of space, and it takes a long time to repeatedly swipe down to get to the bottom where the attachment is shown. No way to quickly scroll down. Need to be able to add custom folders and be able to move emails between folders. Will not download PDF file to a folder; instead, it opens the app.

Alex Schendel

1 month ago

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.

K Hindall

1 month ago

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.

d p

1 month ago

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.

coffee coffee

3 days ago

Fantastic! Moved over once I found K9 became Mozilla's. They didn't yet rename it at that point & then split it off. Its been fantastic the entire time. Does all I need & works great for me. Obviously, using gmail app directly for gmail offers things it does not, but am not concerned about any of those things. They're also still working on it. While I understand why some people rate it low, even though I don't have issues, its still improving. Some people need that.

Frostwind

2 weeks ago

I am incredibly upset that I keep getting a permanent notification about missing permissions to schedule alarms. If I don't want the app to do that, then I don't want to give it permission. Given the open-source nature of the program, it is very frustrating that this happens. The desktop version is wonderful on Linux, but fairly limited on mobile for some reason. At least don't bug users for permissions they do not want to give the app. It isn't a feature I use.

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