Thunderbird Desktop
Version 91.2.1 | Released October 21, 2021
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 New
new
Preference added to disable automatic pausing RSS feed updates after a fetch failure
What’s Fixed
fixed
Recipeint address pills in an error state could incorrectly merge with mailing list pills when expanding the list
fixed
BCC-only messages could not be sent from the Outbox
fixed
Default DSN request was not set when using "Edit as New Message"
fixed
Vertical scrollbar in "Conversations" chat panel did not work correctly
fixed
Chat account "Advanced Options" dialog had no clickable buttons on macOS
fixed
RSS feed attachments could not be saved
fixed
Public ICS calendars served with an incorrect Content-Type could not be added
fixed
Setting a CalDAV calendar to manually update had no effect
fixed
CalDAV calendars set to read-only became writable after restarting Thunderbird
fixed
Saving a copy of a calendar invite (More -> Save As Copy) did not work
fixed
Events in the first or last week of a month were not always printed when printing a month view
fixed
Accessibility improvements; clearer display of area of focus
fixed
Various theme improvements, HiDPI improvements
fixed
"Attachments" menu panels for attached files were empty
fixed
Stability improvements
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