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Thunderbird
@thunderbird.net
Thunderbird is an open-source, platform-neutral email, calendar and productivity suite designed for users who value customization, privacy, and control. Available on Windows, macOS, Linux, and Android - Thunderbird helps you stay connected without lock in.
Ugh, sorry this is happening! All our desktop app bugs live at Bugzilla: bugzilla.mozilla.org/home
Bugzilla Main Page
bugzilla.mozilla.org
November 6, 2025 at 9:24 PM
We are getting closer to an alpha version on TestFlight by the end of the year! SO not quite beta level, but definitely something you can try and help us test!
October 24, 2025 at 9:12 PM
Second, we're hosting a live streamed AMA Thursday at 19:00 UTC and want your questions! Please share any questions for our team here: survey.alchemer.com/s3/8482945/T...

#Thunderbird #AMA
a woman with red lips is smiling with the words ask me behind her
Alt: Moira from Schitt's Creek is smiling and saying "Ask Me"
media.tenor.com
September 22, 2025 at 3:50 PM
a small bird is holding a red heart
Alt: a small blue bird is holding a red heart
media.tenor.com
September 2, 2025 at 5:12 PM
新しいアカウント・ハブでアカウントを追加しようとすると、このような問題が発生しますか?それとも、アプリを使用しているときに発生しているのでしょうか?
August 28, 2025 at 4:01 PM
Hi! We've chatted with the team, and for reply receipt, when the user enables "Return Receipt", the Disposition-Notification-To header is added to the outgoing message and is also present in the received message. We're still checking on the Delivery Status Notification question!
August 28, 2025 at 3:16 PM
And sorry for our support being down. That was just incredibly bad timing but thankfully it seems to be behaving much better this morning.
August 28, 2025 at 2:57 PM
We're so sorry for any issues with Account Hub, and this may be related to a bug we're currently working to fix (bugzilla.mozilla.org/show_bug.cgi...) For now, please either hit ESC in account hub to enter manual mode, or disable Account Hub in Settings > General > Account Hub
1975860 - Cannot add new imap account - account hub locks up - for autodiscovery pointing to account hosted at 3rd party (i.e. large German providers like IONOS,@online.de)
ASSIGNED (vineet) in Thunderbird - Account Manager. Last updated 2025-08-28.
bugzilla.mozilla.org
August 28, 2025 at 2:57 PM
接続の問題については本当に申し訳ない!この現象はデスクトップとアンドロイドのどちらで発生していますか?
August 28, 2025 at 2:29 PM
Oh no! We're sorry you're having issues with TB on your Mac! You mentioned having looked online - have you opened a question or checked at support.mozilla.org yet? We have a global support community there and are probably the best place to go first. We also have a great subreddit, too.
Mozilla Support
support.mozilla.org
August 18, 2025 at 5:52 PM