Thunderbird Desktop
Version 78.6.1 | Released January 11, 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 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 Changed
changed
MailExtensions: browserAction, composeAction, and messageDisplayAction toolbar buttons now support label and default_label properties
What’s Fixed
fixed
Running a quicksearch that returned no results did not offer to re-run as a global search
fixed
Message search toolbar fixes
fixed
Very long subject lines distorted the message compose and display windows, making them unusable
fixed
Compose window: Recipient addresses that had not yet been autocompleted were lost when clicking Send button
fixed
Compose window: New message is no longer marked as "changed" just from tabbing out of the recipient field without editing anything
fixed
Account autodiscover fixes when using MS Exchange servers
fixed
LDAP address book stability fix
fixed
Messages with invalid vcard attachments were not marked as read when viewed in the preview window
fixed
Chat: Could not add TLS certificate exceptions for XMPP connections
fixed
Calendar: System timezone was not always properly detected
fixed
Calendar: Descriptions were sometimes blank when editing a single occurrence of a repeating event
fixed
Various printing bugfixes
fixed
Visual consistency and theme improvements
fixed
Various security fixes
Learn What’s Next
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