Release Notes

Thunderbird Desktop

Version 128.4.2esr | Released November 6, 2024

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 128, see Thunderbird 128 Nebula FAQ

For more on all the new features in Thunderbird 128, see What’s New in Thunderbird 128.

System Requirements: Details

  • Windows: Windows 10 or later
  • Mac: macOS 10.15 or later
  • Linux: GTK+ 3.14 or higher

What’s Changed

changed

Increased the auto-compaction threshold to reduce the frequency of compaction

What’s Fixed

fixed

New profile creation caused console errors

fixed

Repair folder could result in older messages showing wrong date and time

fixed

Recently deleted messages could become undeleted if message compaction failed

fixed

Visual and UX improvements

fixed

Clicking on an HTML button could cause Thunderbird to freeze

fixed

Messages could not be selected for dragging

fixed

Could not open attached file in a MIME encrypted message

fixed

Account creation "Setup Documentation" link was broken

fixed

Unable to generate QR codes when exporting to mobile in some cases

fixed

Operating system reauthentication was missing when exporting QR codes for mobile

fixed

Could not drag all-day events from one day to another in week view

Learn What’s Next

Thunderbird keeps getting better. Subscribe to our newsletter and follow us on social media to stay informed.