Release Notes

Thunderbird Desktop

Version 91.9.0 | Released May 3, 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

changed

A warning is now displayed if an OpenPGP key has unsafe attributes that are ignored; See support article.

What’s Fixed

fixed

OpenPGP integration in Thunderbird 91.8.0 and 91.8.1 did not allow SHA-1 key signatures

fixed

macOS disk image graphics updated

fixed

CalDAV calendars were marked read-only on startup

fixed

Task creation field on macOS incorrectly displayed a search icon

fixed

Various security fixes

See All Releases

Learn What’s Next

Thunderbird keeps getting better. Subscribe to our newsletter and follow us on social media to stay informed.

Visit Our Blog