Software Update: Mozilla Thunderbird 102.4.0

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The Mozilla Foundation has released version 102.4.0 of Thunderbird. Thunderbird is an open source email and newsgroup client, with features such as support for multiple email 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 improvements have also been made in this update:


  • Thunderbird will automatically detect and repair OpenPGP key storage corruption caused by using the profile import tool in Thunderbird 102


  • POP message download into a large folder (~13000 messages) caused Thunderbird to temporarily freeze
  • Forwarding messages with special characters in Subject failed on Windows
  • Links for FileLink attachments were not added when attachment filename contained Unicode characters
  • Address Book display pane continued to show contacts after deletion
  • Printing address book did not include all contact details
  • CardDAV contacts without a Name property did not save to Google Contacts
  • “Publish Calendar” did not work
  • Calendar database storage improvements
  • Incorrectly handled error responses from CalDAV servers sometimes caused events to disappear from calendar
  • Various visual and UX improvements

Version number 102.4.0
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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