Thunderbird 91.5.1

[German]The developers of the Thunderbird email client have released Thunderbird 91.5.1 on January 24, 2022. This is a maintenance update for the 91 development branch that makes fixes. Here is a brief overview..


I had caught it on January 27, 2022 when Thunderbird notified me of the pending update.

Thunderbird Update

According to the Thunderbird release notes, the update includes the following fixes.

  • JS LDAP implementation did not support self-signed SSL certificates
  • After saving a draft and subsequently sending a FileLink email, the original file was removed from disk
  • Chat OTR encryption did not work
  • OTR verification bar was not removed after completing verification
  • Various theme improvements

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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