Download Mozilla Thunderbird 138.0

What’s New
new
New mail alert now includes message disposition buttons
new
New mail notification customization added to macOS Settings
What’s Changed
changed
Changed color override defaults with high contrast mode on macOS and Linux
What’s Fixed
fixed
macOS notifications displayed two logos
fixed
Message preview truncation in notifications improved
fixed
Wrong day of week displayed for some emails
fixed
In dark mode with light theme, message reader still displayed in dark mode
fixed
Message link and text colors were incorrect when using Dark Reader
fixed
Unchecking "Show all headers" in Message Header Settings closed dialog
fixed
Address book did not match users when case differed in some instances
fixed
Menu items to manage folders were not disabled in offline mode
fixed
Using Delete column in "Search Messages..." window could delete other messages
fixed
Ctrl or Shift selecting multiple messages reset when dragging across a message
fixed
Newsgroups could no longer be re-ordered in the folder tree via drag and drop
fixed
Windows users with non-ASCII folder names and profile paths could not view emails
fixed
OpenPGP key was not updated when accepted key was reimported with new identities
fixed
Dual signed (PGP and S/MIME) emails were not displayed
fixed
Notification duration preference enabled when system notifications were enabled
fixed
Thunderbird could crash when adaptive message filtering was enabled
fixed
CardDAV synchronization to Zimbra server failed
fixed
Keyboard navigation was not possible when first header button was disabled
fixed
Folders missing from view when "Show only subscribed folders" was not selected
fixed
Nickserv messages appeared during successful authentication
fixed
Global indexing failed when processing email with invalid calendar data
fixed
Clicking a mid: link in Calendar opened two copies of the message
fixed
Some calendar requests were blocked due to opaque response blocking
fixed
Visual and UX improvements
fixed
Security fixes