Thunderbird: Free Your Inbox

FREE YOUR INBOX! Thunderbird is your all-in-one communications command center that puts YOU in control. Manage all your email accounts separately or in a unified inbox. Filter, customize, and organize the way you like. Thunderbird simply makes your life simpler.

What's New: https://blog.thunderbird.net/

Download: https://thunderbird.net
Donate: https://mzla.link/eoy23_masto
Podcast: https://thundercast.transistor.fm/subscribe
Contribute: https://blog.thunderbird.net/2022/08/how-you-can-contribute-to-thunderbird-without-knowing-how-to-code/

Public Key

npub1hxz3d2nlnsjaelphupxqv7mfqhmrrxzc48lntlf0w8wt9fgw98yshyr8sj

NIP-05 Address

[email protected]

Profile Code

nprofile1qqstnpgk4flecfwulsm7qnqx0d5sta33npv2nle4l5hhrh9j558znjgpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsdn0eev

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub1hxz3d2nlnsjaelphupxqv7mfqhmrrxzc48lntlf0w8wt9fgw98yshyr8sj

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Last Notes

2026-03-19 14:16:19 GMT

Thundercast is back! Our hosts are steering us through the roadmaps for the desktop and mobile clients. Tune in for all the information on what's coming next, and minimal backseat driving.
#Thunderbird #ThunderCast #OpenSource
https://share.transistor.fm/s/4db3895e

2026-01-31 09:17:58 GMT

The Thunderbird team is ready for day 1 of FOSDEM! Come visit us in Building F, level 1 to chat with the team, learn what we're up to with desktop, mobile, and Pro, and of course, grab stickers!
And don't forget Brendan's talk on Exchange in Thunderbird at noon today in the Modern Email Devroom (K.4.201)!
#Thunderbird #fosdem
https://files.mastodon.online/media_attachments/files/115/988/951/553/931/454/original/e7a051614593f707.jpeg
https://files.mastodon.online/media_attachments/files/115/988/952/387/469/297/original/d9bcde7a4f3eaff1.jpeg

2025-12-19 14:00:15 GMT

The Thunderbird team is off to rest and recharge, and come back strong on January 5! Until then:
If you need community support: support.mozilla.org
If you need to report a bug: bugzilla.mozilla.org
If you want to suggest a feature: connect.mozilla.org
See you all next year!
#Thunderbird

2025-12-18 15:58:41 GMT

We can't put enough gratitude in the character limit for everything our community has helped us do this year, so we wrote a recap blog. Thank you everyone who made this all happen! 💙 🙌
#Thunderbird #OpenSource
https://blog.thunderbird.net/2025/12/thunderbird-2025-review-building-stronger-for-the-future/

2025-12-11 19:16:10 GMT

Exchange email support has landed! We've invited members of our desktop team to Community Office Hours to give us all the details about what's in now and what's coming next!
#Thunderbird #Exchange
https://blog.thunderbird.net/2025/12/video-exchange-email-support/

2025-12-09 22:55:10 GMT

Recently we completed a security audit of Thunderbird Send, our upcoming end-to-end encrypted large file sharing service, with the help of the @npub1c8c…lkhj and 7ASecurity. Read our summary of the report's findings, and learn how we've acted on these recommendations to be more secure and worthy of the trust our user community places in us.
#Thunderbird #OpenSource #InfoSec
https://blog.thunderbird.net/2025/12/thunderbird-send-security-audit-with-ostif-and-7asecurity/

2025-12-02 15:38:52 GMT

Fixing old Android code, integrating with the upcoming Thunderbird Pro, and making a balanced iOS roadmap are all part of our mobile development goals in 2026.
#Thunderbird #OpenSource
https://blog.thunderbird.net/2025/12/state-of-the-thunder-14-the-2026-mobile-roadmap/

2025-11-18 16:10:09 GMT

If your school or workplace uses Exchange for email, accessing it with Thunderbird just got easier! Our blog post has all the details on getting connected. Additional features, like calendar and address book, are in the works!
#Thunderbird #Exchange
https://blog.thunderbird.net/2025/11/thunderbird-adds-native-microsoft-exchange-email-support/

2025-11-14 18:36:36 GMT

It seems like yesterday we released Thunderbird for Android. See how fast our first mobile app is growing up.
#Thunderbird #OpenSource #Android
https://blog.thunderbird.net/2025/11/video-an-android-retrospective/

2025-10-21 14:43:20 GMT

Thunderbird 144 is out now! Exchange support is closer to officially landing, dragging and dropping your folders is easier, and we're adding new ways to keep your email safe!
#Thunderbird #OpenSource #Email
https://blog.thunderbird.net/2025/10/thunderbird-monthly-release-144-recap/

2025-09-15 15:47:39 GMT

We've got the latest updates on our Android and upcoming iOS apps! Take a sneak peak at the new Android account drawer, iOS account setup and upcoming monthly release schedule. Also, we explain why recent updates affected read/unread message readability and how we're fixing it in the short AND long term.
#Thunderbird #OpenSource
https://blog.thunderbird.net/2025/09/mobile-progress-report-july-august-2025/

2025-09-11 19:51:24 GMT

After a short hiatus, State of the Thunder is back! This time, in addition to tackling community questions, we're also responding to the top 20-ish requested features from Mozilla Connect. Get the latest news on Sync, translations, and more!
#Thunderbird #OpenSource
https://blog.thunderbird.net/2025/09/state-of-the-thunder-mozilla-connect-updates/

2025-08-28 14:25:55 GMT

Thunderbird 142.0 has a host of exciting features and bug fixes. From improving the PDF experience to better support for quiet time, learn what's just landed in our recap of the newest monthly release.
#Thunderbird #OpenSource #Email
https://blog.thunderbird.net/2025/08/thunderbird-monthly-release-142-recap/

2025-08-05 13:53:23 GMT

Archiving from notifications, warnings about expiring PGP keys, bug fixes, and more! Find out what's in Thunderbird 141.0 (and how you can get it) in our new Monthly Release Recap!
#Thunderbird #OpenSource #Email
https://blog.thunderbird.net/2025/08/monthly-release-141-recap/

2025-07-30 18:36:37 GMT

We've been doing State of the Thunder, our bi-weekly deep dive into development and roadmap discussion, for a few months now! One common thing we hear is "this info is great! But, can you put it in a blog?" And starting with episode 10, we have. All of the latest Thunderbird updates and discussions, now in an easy to read format - with links to the videos and podcasts for those of you who still want to watch or listen!
#Thunderbird #OpenSource
https://blog.thunderbird.net/2025/07/state-of-the-thunder-answering-community-questions/

2025-07-29 14:33:48 GMT

We're growing our community team! Thunderbird has been so lucky to have a community that's helped us survive and now thrive, and we want a team that can help everyone who contributes to Thunderbird thrive just as much. Meet the members of the team and learn what they have planned!
#Thunderbird #Community #OpenSource
https://blog.thunderbird.net/2025/07/welcoming-new-faces-to-the-thunderbird-community-team/

2025-07-17 13:39:25 GMT

Do you have ideas on what might make a more welcoming, exciting and rewarding community experience for Thunderbird users & developers?
We're gathering ideas on how to strengthen and improve the Thunderbird community. So, whether you are a long-time contributor or a curious newbie, we would love to hear your thoughts! Share your suggestions below and help shape the future of our community!
#Thunderbird #OpenSource #Community
https://connect.mozilla.org/t5/discussions/have-ideas-to-improve-the-thunderbird-community/td-p/100264

2025-07-14 15:05:27 GMT

The latest Thunderbird mobile update is out! We're getting closer to sharable iOS screenshots while sharing a sneak peak at the new Android account drawer and folders. And check out all the improvements from our team and community!
#Thunderbird #OpenSource
https://blog.thunderbird.net/2025/07/mobile-progress-report-june-2025/

2025-07-08 14:57:27 GMT

Thunderbird 140 “Eclipse” is here! Our latest Extended Security Release (ESR) has improved visuals, including dark message mode, native OS notifications, a new Account Hub, and even more features to give you total control over your inbox and get on with your day.
Read about these and other changes and improvements, including experimental Exchange support, at our blog.
#Thunderbird #OpenSource
https://blog.thunderbird.net/2025/07/welcome-to-thunderbird-140-eclipse/

2025-07-03 22:50:57 GMT

The latest volume of State of the Thunder is out! We're keeping you updated on our roadmap progress as we look towards Q3, sharing our advice on using Thunderbird developer tools, and giving you a deeper look into the hows and whys of our fundraising model.
#Thunderbird #OpenSource
https://tilvids.com/w/huV2VHBZzqYKqVZgdM5x7k

2025-06-17 16:54:46 GMT

Thunderbird 140, our latest Extended Support Release, is due next week! Watch our latest State of the Thunder for a deep dive into Thunderbird update channels. Learn the difference between yearly ESR, monthly Release, and our testing channels, Beta and Daily, how to know which one you're on, and how to change between them. We also have highlights of the features Release users have been enjoying coming to 140!
https://tilvids.com/w/uXEAMvdJEvC6QigJtTX1a8

2025-05-28 20:31:47 GMT

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We love that this helps you! We also love any reason to post this image:
https://files.mastodon.online/media_attachments/files/114/587/342/893/418/393/original/386508c337cbd540.jpg

2025-05-21 17:00:56 GMT

Do you have access to a Microsoft-hosted Exchange account? Exchange support is now available in Thunderbird Daily for testing, and we could use your help making sure it's ready for all our users in a few months. See our post on the Developers' mailing list to learn how to help:
#Thunderbird #Exchange
https://thunderbird.topicbox.com/groups/planning/T6c8bc7224f85aab6-M863a0ab83939d71bdf14361e

2025-05-21 14:00:27 GMT

We've been talking a lot about roadmaps for the last four State of the Thunders, and this volume is all about priorities. How do we set them and decide on timing for certain items? How do we make mid-development adjustments? And how do we make sure our priorities are in line with what our users need?
We're also updating you on Thunderbird Sync (Yes, Sync!), Thundermail and the Pro suite, as well as our mobile development. Watch on TILvids:
#Thunderbird #OpenSource
https://tilvids.com/w/sT7C8GRpiH2AY5UPbjuDZy

2025-05-20 17:30:03 GMT

Ever wondered about what MZLA is, how it relates to Thunderbird, and how it works with (but is different from) Mozilla and the Mozilla Corporation? Curious about how we work with the Thunderbird Council, our community governance? Want to know more about our future plans, including the mobile apps, Thundermail, and Thunderbird Pro? Check out the newest Community Office Hours with Director Ryan Sipes answering these questions and more.
https://blog.thunderbird.net/2025/05/video-talking-mzla-with-ryan-sipes/

2025-05-20 12:43:35 GMT

Heading to #KotlinConf later this week? So are two members of our mobile team! Be sure to say hi if you see them in talks and in the hallway track, and we've even been told @npub1cnw…c4vl is bringing some Thunderbird for Android stickers to share!
#Thunderbird #Kotlin
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2025-05-15 17:19:47 GMT

We've had a few iOS updates in the last few Android Progress Reports, but with more substantial iOS news, it's time for a name change! So here's the shiny, new(ish) Mobile Progress Report! ✨
Last month, we published our initial iOS repository, made plans for Testflight and laid out our intended initial features. We also discuss initial release engineering and localization decisions. For the Android app, we made a LOT of fixes. 🔧
#Thunderbird #iOS #Android #Email
https://blog.thunderbird.net/2025/05/thunderbird-for-mobile-april-2025-progress-report/

2025-04-01 17:17:00 GMT

The bird is out of the bag! We're introducing Thunderbird Pro (you already know Appointment!), a set of productivity AND privacy boosting services. And that includes...*drum roll*...an email service we're calling Thundermail. Find all the info in this excellent article:
#Thunderbird #OpenSource #Email
https://www.forbes.com/sites/jasonevangelho/2025/04/01/finally-mozilla-thunderbird-takes-on-gmail-with-new-email-service/

2025-03-20 13:58:28 GMT

Our inaugural State of the Thunder is live on TILvids! Director of desktop and mobile apps @npub1vp0…ukg9 leads a discussion on our upcoming desktop roadmap, our values, and how we can work more in the open.
(We'd like to further open these discussions, so stay tuned for how you can join future SotTs!)
#Thunderbird #OpenSource #Community
https://tilvids.com/w/o3SjjuRFxovcabDaFMkRxh

2025-03-05 22:46:07 GMT

- reply

We won't be adopting the Firefox Terms of Use for Thunderbird.

2025-03-05 22:09:07 GMT

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We also wanted to additionally clarify that we won't be adopting the Firefox Terms of Use for Thunderbird, either on desktop or on mobile.

2025-03-05 19:18:14 GMT

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Thunderbird will not be adopting the Firefox Terms of Use. We hope this information helps!

2025-01-31 14:10:47 GMT

We've got some exciting job openings at #Thunderbird! We're hiring for a Sr. UX Design Specialist, A #Rust /C++ Software Engineer for the desktop app, and......a Senior #iOS Engineer to join our mobile team to help us bring Thunderbird to your iPhone and iPad!
Help us spread the word!
https://www.mozilla.org/careers/listings/?team=MZLA/Thunderbird

2024-12-16 15:42:02 GMT

Want to know more about the change from K-9 Mail to Thunderbird for Android? We're answering your questions - three of them, anyway - in this latest installation of Heise.de's "Three Questions and Answers" series!
#Thunderbird #OpenSource #Android
https://www.heise.de/news/Drei-Fragen-und-Antworten-Technischer-Wandel-von-der-K-9-zur-Thunderbird-App-10200412.html

2024-12-07 17:17:52 GMT

20 years ago today, Thunderbird hatched from its shell and spread its wings! To our incredible community of users, contributors, and supporters - thank you for helping us get here. We couldn’t have done it without you. Here’s to 20 more - and beyond!
https://blog.thunderbird.net/2024/12/celebrating-20-years-of-thunderbird/

2024-11-05 15:10:57 GMT

The October Thunderbird Monthly Development Digest is out! In it, we have updates on:
* Exchange support 🦀
* QR cross-device support 📱
* Account hub 👥
* Upstream changes and database issues 🛠️
* and more! ✨
#Thunderbird #Development #OpenSource
https://blog.thunderbird.net/2024/11/thunderbird-monthly-developer-digest-october-2024/

2024-11-04 19:42:35 GMT

Thanks for all your patience, @npub1mtr…trt0 users! Thunderbird for Android is now available on F-Droid - download away!
#Thunderbird #ThunderbirdforAndroid #fdroid #OpenSource
https://f-droid.org/packages/net.thunderbird.android

2024-10-30 14:01:38 GMT

The wait is over! Our first stable release of Thunderbird for Android is out NOW! Find out what's new, where to get support, and how to download it in our release announcement.
And to everyone who contributed via beta testing, giving us feedback on K-9 Mail, localizing, thank you. :) Your community team work has made the dream work.
https://blog.thunderbird.net/2024/10/thunderbird-for-android-8-0-takes-flight/
#Thunderbird #ThunderbirdForAndroid #OpenSource

2024-10-26 10:39:43 GMT

We've been having great conversations at the Ubuntu Summit in The Hague this weekend - it's been fantastic to be with so many other open source projects, like @npub15f7…m7wr @npub1lmq…xa4a and of course, @npub12ln…vs03 !
#UbuntuSummit #OpenSource
https://files.mastodon.online/media_attachments/files/113/373/244/583/373/345/original/7358a9e1d8e9c84f.jpg

2024-10-21 16:35:14 GMT

Our latest productivity blog is out - and it was inspired by one of [@RL_Dane](https://fosstodon.org/@RL_Dane )'s many Thunderbird tips, tricks, and hacks! If you're fighting against an overflowing inbox, and don't know where to start, the 'Grouped by Sort' view can help.
#Thunderbird #Productivity #Community
https://blog.thunderbird.net/2024/10/maximize-your-day-focus-your-inbox-with-grouped-by-sort/

2024-10-18 20:23:52 GMT

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Oh noooooo. If you report this on https://bugzilla.mozilla.org and shoot me the bug number, I do my best to bump this to the team!
(And trust me, this typist just got her first pair of bifocals. We get the challenges that come with experienced eyes!)

2024-10-16 14:54:27 GMT

Thunderbird for Android 8.0b3 is out! There are two things we'd really love help testing. One is the funding feature! (https://thunderbird.topicbox.com/groups/android-beta/T0b0836b3d35dcd37/thunderbird-for-android-8-0b3-is-out-help-us-test-funding). The other is the QR code sync between desktop and mobile (https://thunderbird.topicbox.com/groups/android-beta/T5f5ca6c4ab1e1d28/testing-qr-code-synchronization-between-desktop-and-android). Thanks to everyone who has helped beta test and given feedback!
Release notes on our GitHub: https://github.com/thunderbird/thunderbird-android/releases
#ThunderbirdForAndroid #Thunderbird #OpenSource

2024-10-07 13:39:49 GMT

Do you speak Thunderbird, and either Croatian, Breton, or Gaelic?
All three of those languages have slipped under 70% translation for Thunderbird for Android! Normally this would mean removing them from the app. But we're hoping we can rally some translators to help complete these languages - or at least get them over 70% translated!
#OpenSource #Localization #Community
To learn more or get started, go to our Hosted Weblate! https://hosted.weblate.org/projects/tb-android/#languages

2024-10-03 14:05:01 GMT

It's time for the Thunderbird Monthly Development Digest! We have updates on:
* Our Exchange progress
* Account hub development
* Global Database and Conversation View
* In-App Notification
* Source Docs Clean Up
* Cross Device Import
* Battling OAuth Changes
Read the latest and find out what's landing soon! 🛬
#Thunderbird #Development #OpenSource
https://blog.thunderbird.net/2024/10/thunderbird-monthly-developer-digest-september-2024/

2024-09-30 18:45:37 GMT

We promise we aren't pulling your strings - Thunderbird for Android Beta is GO! Celebrate the launch with us and learn where to download it and how to help us test for the upcoming release! 🚀 🎉
#Thunderbird #Android #OpenSource
https://blog.thunderbird.net/2024/09/help-us-test-the-thunderbird-for-android-beta/

2024-09-26 20:23:25 GMT

Thunderbird for Android is coming soon! Find out how to get involved, from beta testing to localization to support and more, in our shiny new contributor guide!
(Seriously, by soon, we mean soon!)
#Thunderbird #Android #OpenSource
https://blog.thunderbird.net/2024/09/contribute-to-thunderbird-for-android/

2024-09-19 13:40:05 GMT

Today, our job is simple - to inspire to to try a Thunderbird Add-on to boost your productivity! If you don't know where to get started, our community (including here on Mastodon!) gave us some great ideas. 💡
#Thunderbird #Community #OpenSource
https://blog.thunderbird.net/2024/09/maximize-your-day-extend-your-productivity-with-add-ons/

2024-09-17 13:51:05 GMT

If you're new to Thunderbird, helping someone get started, or were just curious, we explain not only how Thunderbird's spam filters work, but our tips and tricks for putting them to work to keep your inbox spam and junk free. 📧
#Thunderbird #Spam #OpenSource
https://blog.thunderbird.net/2024/09/thunderbird-and-spam/

2024-09-13 14:01:16 GMT

Nothing unlucky on our calendar today! Just an update on what we've been doing this summer for K-9 Mail/Thunderbird for Android. We have:
* Material 3 updates with screenshots 🖼️
* Progress on the move to feature modules ➡️
* A call to help update our docs 📝
* And community contributions! 💪
#Thunderbird #Android #Development
https://blog.thunderbird.net/2024/09/thunderbird-for-android-k-9-mail-july-aug-2024-progress-report/

2024-09-09 13:19:43 GMT

It's a Monday morning, we're sipping coffee and listening to jazz, and thinking about productivity and Thunderbird Add-ons!
We'd love to know what Add-ons help you get things done for our next productivity blog coming next week. (Also, I'll probably install all of them. You know, for research! - Monica) We love seeing your productivity tips and tricks, and we know you've got some great suggestions. So start your week off right and let us know!
#Thunderbird #Productivity #OpenSource

2024-09-05 21:15:11 GMT

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......can we steal this for a future productivity post? Because you're right - that IS a game changer!

2024-09-04 15:00:35 GMT

August seems like it just flew by! Catch up on what the Thunderbird Desktop Team has been working on in our latest Developer's Digest. In it, we have:
more Rust! 🦀
updates on Exchange and the global database 🌐
news about the upcoming Calendar rebuild. 🗓️
#Thunderbird #OpenSource #Development
https://blog.thunderbird.net/2024/09/thunderbird-monthly-developer-digest-august-2024/

2024-08-29 13:32:19 GMT

Tired of playing email tag to figure out a meeting time? We are too. Our newest project, Appointment, is coming to the rescue - and a closed beta! Find out more and get links to the waiting list and our GitHub repo in our announcement blog.
#Thunderbird #OpenSource #Scheduling
https://blog.thunderbird.net/2024/08/plan-less-do-more-introducing-appointment-by-thunderbird/

2024-07-31 16:08:02 GMT

Our July Development Digest is out, and we've got some great highlights about the latest 128 Nebula release and upcoming features!
🌀 128 Nebula! Where to find more info and how to get it.
🐧 The Linux System Tray lands at last!
🪟 Exchange in TB Daily
https://blog.thunderbird.net/2024/07/thunderbird-monthly-development-digest-july-2024/
#Thunderbird #OpenSource #Development

2022-11-07 09:26:00 GMT

We never did a proper #introduction, did we? 😲
Hi Fediverse, we're Thunderbird, an #opensource #email client available for free on Linux, macOS and Windows. (And coming next year to Android. FINALLY, right?)
You can use Thunderbird for managing an unlimited number of mail accounts, calendars, newsgroup accounts, and RSS feeds. You can also chat using your @npub1m9z…whzq account.
💙 LIKES: Open standards, privacy, freedom, customization.
🚫 DISLIKES: Proprietary code.
Nice to meet you 📩