Download Mozilla Thunderbird 115.5.2

The Mozilla Foundation has released version 115.5.2 of Thunderbird. Thunderbird is an open source client for email and newsgroups, with features such as support for various mail and news accounts. Furthermore, there is a spam filter, spell check, calendar and address book, and it has a customizable appearance. In version 115 we will find, among other things, a new user interface, which has been given the name Supernova by Mozilla. Furthermore, the calendar and address book have been improved, and links are no longer opened in Thunderbird, but in the standard web browser. In this update we find the following improvements:

Fixes

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