Thunderbird 91.10.0

[German]In addition to the Firefox developers providing a security update for the Firefox browser (see Firefox 101.0 and 91.10esr released – with security fixes), these critical vulnerabilities in the Thunderbird email client have also been fixed with the May 31, 2022 update to version 91.10.0.


Thanks to the reader for pointing this out. According to the Thunderbird release notes, there are several UX and theme improvements. In addition, vulnerabilities described in this document and in Firefox 101.0 and 91.10esr released – with security fixes are closed. 

System requirements

The system requirements for the different operating system versions (see here for more details):

  • Windows: Windows 7 or higher
  • Mac: Mac OS X 10.9 or higher
  • Linux: GTK+ 3.14 or higher

The download of the free Thunderbird is available here.

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