Thunderbird Desktop
Version 115.5.2 | Released December 11, 2023
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 help and a quick start on Thunderbird 115, see Thunderbird 115 Supernova FAQ.
For more on all the new features in Thunderbird 115, see What’s New in Thunderbird 115.
System Requirements: Details
- Windows: Windows 7 or later
- Mac: macOS 10.12 or later
- Linux: GTK+ 3.14 or higher
What’s Fixed
fixed
"Compact" option was missing from folder context menu for IMAP accounts using maildir
fixed
Message list could not be properly read by screen readers in table view
fixed
Messages with slow-loading images were delayed being marked as read
fixed
Messages opened in background tab were incorrectly marked as read
fixed
Mark All Read did not work for virtual folders
fixed
Delete (trash icon) in message display did not work in Unified folders
fixed
Unified folders were missing "Mark Folder Read" option in context menu
fixed
"Reply to List" was incorrectly disabled in Unified Toolbar since Thunderbird 115.4.1
fixed
Sorting by column with "Grouped By" enabled then performing a quick filter search caused blank message pane
fixed
Attachment list did not always appear if remote message content loaded slowly
fixed
Messages in outbox were not shown as unread by default
fixed
"Apply columns to" sometimes failed to apply columns to a root folder and its descendants
fixed
Global search results displayed as a list did not allow threads to be collapsed
fixed
"Quick Filter" button on toolbar was disabled when viewing search results as a list
fixed
Folder open hover delay was too short when using drag-and-drop
fixed
Parent folders with collapsed subfolders did not consistently display new mail indicator or message count for subfolders
fixed
Message list scroll position could move randomly when switching folders
fixed
Undoing deletion of local messages required using "Undo" (Ctrl-Z) twice
fixed
IMAP messages deleted in Thunderbird still appeared in other email clients that don't respect messages marked "\deleted"
fixed
IMAP folder discovery was slowed by status bar message updates
fixed
Servers with non-LDH (letters-digits-hyphens) hostnames, such as those containing non-ASCII Unicode characters, could not be found
fixed
Images could not be copied and pasted from one message into another
fixed
Troubleshooting page (about:support) did not work on profiles with no outgoing email server, such as news-only profiles
fixed
Minimize/maximize button order was incorrect when placing window titlebar buttons on left-hand side
fixed
OpenPGP integraton with smartcard using latest version of Gpg4Win failed
fixed
Various accessibility improvements
fixed
Various UX and visual improvements
Learn What’s Next
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