Software Update: Mozilla Thunderbird 102.5.0

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The Mozilla Foundation has released version 102.5.0 of Thunderbird. Thunderbird is an open source email and newsgroup client, with features such as support for multiple mail and news accounts, a spam filter, spell checker, and a customizable appearance. In version 102 Mozilla has refreshed the user interface and the address book, made importing and exporting user accounts easier and added the Matrix chat protocol. The following changes and improvements have also been made in this update:


  • Ctrl+N shortcut to create new contacts from address book restored


  • Account Settings UI did not update to reflect default identity changes
  • New POP mail notifications were incorrectly shown for messages marked by filters as read or junk
  • Connecting to an IMAP server configured to use PREAUTH caused Thunderbird to hang
  • Error responses received in greeting header from NNTP servers did not display error message
  • News messages sent using “Send Later” failed to send after going back online
  • “Download/Sync Now…” did not completely sync all newsgroups before going offline
  • Username was missing from error dialog on failed login to news server
  • Thunderbird can now fetch RSS channel feeds with incomplete channel URL
  • Add-on “Contribute” button in Add-ons Manager did not work
  • Help text for /part Matrix command was incorrect
  • Invite Attendees dialog did not fetch free/busy info for attendees with encoded characters in their name
  • Various security fixes

Version number 102.5.0
Release status Final
Operating systems Windows 7, Linux, macOS, Windows 8, Windows 10, Windows 11
Website Mozilla Foundation
License type Prerequisites (GNU/BSD/etc.)
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