Thunderbird Desktop
Version 153.1.1esr | Released August 26, 2026
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 help and a quick start on Thunderbird 153, see Thunderbird 153 Meadow FAQ
For more on all the new features in Thunderbird 153, see What’s New in Thunderbird 153.
System Requirements: Details
- Windows: Windows 10 or later
- Mac: macOS 10.15 or later
- Linux: GTK+ 3.14 or higher
What’s Fixed
fixed
Thunderbird upgrade disabled composition toolbar
fixed
Draft was not preserved when encrypted message send failed
fixed
Account Hub prompted for calendar credentials after successful login
fixed
Thunderbird crash fixes
fixed
Folder compaction showed incorrect disk space recovery estimates
fixed
Thunderbird failed to launch GPU process
