Release Notes

Thunderbird Desktop

Version 91.8.0 | Released April 5, 2022

Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

For more on all the new features in Thunderbird 91, see New in Thunderbird 91.0.

System Requirements: Details

  • Windows: Windows 7 or later
  • Mac: macOS 10.12 or later
  • Linux: GTK+ 3.14 or higher

What’s Changed


Google accounts using password authentication will be migrated to OAuth2. See KB Article.

What’s Fixed


OpenPGP ECC keys created by Thunderbird could not be imported into GnuPG


Exporting multiple public PGP keys from Thunderbird was not possible


Replying to a newsgroup message erroneously displayed a "No-reply" popup warning


Opening mid: URLs on macOS failed


Address books stored in older formats were loaded as SQLite files, causing a crash


Replicated LDAP directories were lost after switching Thunderbird to "Offline"`mode


Importing webcals from the commandline failed if the URI ended with an .ics file extension


Various security fixes

Learn What’s Next

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