Thunderbird Desktop
Version 91.1.1 | Released September 16, 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.
** Thunderbird 91 is only offered as direct download from thunderbird.net and not as an upgrade from Thunderbird version 78 or earlier.** A future release will provide updates from earlier versions.
System Requirements: Details
- Windows: Windows 7 or later
- macOS: macOS 10.12 or later (macOS 11.0 for Silicon)
- Linux: GTK+ 3.14 or higher
What’s New
new
Menu item for disabling subject encryption for a single message added
What’s Changed
changed
Printing messages that are not currently displayed is no longer supported, including printing multiple messages at once
What’s Fixed
fixed
Buttons on compose window dialogs did not have a visual indication of focus
fixed
Dropdown fields in message compose window were unreadable on Windows 7 with a dark theme
fixed
Multiple bulk mail notification warnings were displayed
fixed
Enabled/Disabled state of message filters did not persist as expected
fixed
Printing a message did not print a list of its attachments
fixed
Images attached from a web page were not sent as expected
fixed
OpenPGP public key was attached multiple times when forwading a message
fixed
Windows tray icon disappeared if Thunderbird was started by a shortcut with "Run" set to "Minimized"
fixed
Windows tray message count badge displayed the "unread" count instead of the "new" message count
fixed
Some downstream Thunderbird builds were incorrectly checking addons for a signature, causing all addons to be disabled
fixed
Addressbooks set up with autoconfig showed no search results
fixed
Various CardDAV setup and auto-detection fixes
fixed
Dates (such as birthday) stored in contacts may display the wrong date; a one-time manual fix may be needed for dates that are incorrect.
fixed
Attached VCards displayed as plain text when an email was HTML formatted
fixed
Mailing list names with non-ASCII characters incorrectly displayed with an error
fixed
LDAP directories were not searched for matches when adding recipients to an email
fixed
Clicking "Connect to an LDAP address book" in account setup opened CardDAV setup dialog
fixed
LDAP address books using Kerberos/GSS-API authentication did not authenticate
fixed
LDAP search queries containing non-ASCII characters produced no results
fixed
IRC server connections did not automatically retry after a timeout
fixed
Calendar event editor did not honor mail.spellcheck.inline
