Download Mozilla Thunderbird 102.3.3

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The Mozilla Foundation has released version 102.3.3 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:

What’s New

  • Option added to show containing address book for a contact when using All Address Books in vertical mode


  • Thunderbird will try to use POP NTLM authentication even if not advertised by server
  • Task List and Today Pane sidebars will no longer load when not visible


  • Sending a message while a recipient pill was being modified did not save changes
  • Nickname column was not available in horizontal view of Address Book
  • Multiline organization values ​​were displayed across two columns in horizontal view of Address Book
  • Contact vCard fields with multiple values ​​such as Categories were truncated when saved
  • ICS calendar files with a FREEBUSY property could not be imported
  • Thunderbird would hang if calendar event exceeded the year 2035

Version number 102.3.3
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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