Thunderbird Desktop
Version 78.9.0 | Released March 23, 2021
Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla.
For more on all of the new features in Thunderbird 78, see New in Thunderbird 78.0.
System Requirements: Details
- Windows: Windows 7 or later
- Mac: macOS 10.9 or later
- Linux: GTK+ 3.14 or higher
What’s Fixed
fixed
New mail notification displayed old messages that were unread
fixed
Spaces following soft line breaks in messages using quoted-printable and format=flowed were incorrectly encoded; existing messages which were previously incorrectly encoded may now display with some words not separated by a space
fixed
Some fields were unreadable in the Dark theme in the General preferences panel
fixed
Sending a message containing an anchor tag with an invalid data URI failed
fixed
When switching tabs, input focus was not moved to the new tab
fixed
Address Book: Syncing a read-only Google address book via CardDAV failed
fixed
Address Book: Importing VCards with non-ascii characters would fail
fixed
Address Book: Some values may not have been parsed when syncing from Google address books.
fixed
Add-ons Manager did not show if an addon used experiment APIs
fixed
Calendar: Removing a recurring task was not possible
fixed
Various security fixes
Known Issues
unresolved
The fix for bug 210148 included in Thunderbird 78.8.1 was removed. New mail notifications not showing if there were unread messages from previous notifications.
