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Join UsVersion 114.0beta, first offered to channel users on May 12, 2023
New folders are now added to virtual parent folders and saved searches automatically
"Total message count" can now be enabled/disabled for folders in Folder Pane
Automatic enabling/disabling of encryption can now be enabled through UI
Searching for "about:config" in Settings now finds "about:config"
Cards now support phone and fax number links
Canceling account setup during verification prevents account from being added again
Holding "Shift" did not switch to non-default composition mode
Displaying a message with Unified Inbox enabled changed the folder selected in the Folder Pane to the actual inbox containing the message
Unified Toolbar customization indicated keyboard focus on multiple elements simultaneously
"Mark thread as read" was only available when a single message in a thread was selected
Selecting a folder in the Folder Pane sometimes re-selected the folder under a different folder mode
Quick Filters took up to several seconds to filter larger folders
"Run Junk Mail Controls" did not work
Opening Message-ID in message header by clicking on the ID or selecting "Open Browser With Message-ID" did not work
Pressing "Enter" on focused column header incorrectly opens selected message
"Location" column was not shown when displaying global search results as list, and was not populated when enabled manually
Message tag colors were not shown in vertical view
Drag-and-drop did not work for moving messages to a new folder in vertical view
Drag-and-drop did not work for adding .eml files to mailbox
Double-clicking on any button in a message list row incorrectly opened the message in a tab
Message list option "Copy as decrypted to" was unavailable in context menu
Structure table in "Key Properties" dialog did not expand to fit contents, making the structure table unusable
Messages could not be sent through some SMTP servers due to unhandled formatting of username prompt
[OpenBSD] Links could not be opened in browser
"NNTP Cancel Message" option did not work
"Article not found" page was not displayed for news articles unavailable on the server
Newsgroup names were not abbreviated in folder list
Addressbook contact context menu could not be opened via keyboard
Long lists of chat conversations could not be fully viewed or scrolled
When creating a new event, the organizer was not automatically added to the event
"Invitations" dialog was incorrect size and could not scroll
Calendars with a name containing a slash could not be exported without first being renamed
Modifying events in locally-hosted ICS calendars sometimes led to data loss
Disabled ICS calendars were incorrectly refreshed during startup
Various visual and UX improvements
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Message Pane "Table View" when using Vertical Layout
Unified Toolbar drag space improvements
"Get Messages" icon updated to be visually distinct from "New Message" icon
"Attachments" menu item was not enabled when a message with attachments was selected
Menu items for special views were enabled when using a Virtual Folder
Incorrect localized labels were applied to some "Delete" menu items, depending on what was in focus
"Delete" and "Junk" Unified Toolbar buttons were always disabled
"Tags" submenu in standalone window did not populate tags
Tag-related actions in message header did not work
"Empty Trash" menu item was not always enabled
Context menu "Copy email address" link in a message body did not work
Actions not relevant for messages opened from a file were enabled
No context menu was shown for RSS items displayed as a web page
"Zoom" feature was not available on web pages displayed within Thunderbird
Various visual improvements
Message list performance improvements
Collapsed folders did not display unread message count in sub-folders
Dragging messages from Advanced Search dialog to desktop did not work
(was: old subject) was not removed from message subject on reply with OpenPGP enabled
Printing failures
Visual and theme improvements
Added right-click context menu to "Get Messages" button in folder pane
Task bar notification icon for Unread messages did not always disappear after reading messages
Deleting messages reset scroll position in message list
Marking message as deleted did not advance message list to next message when focus was on message reader
Screen reader did not announce nesting level of nested messages in message list
"Read" and "Unread" message states were not announced by screen reader
Multi-message summaries in message pane could not be scrolled with keyboard
"Previous", "Next", and "Delete" buttons in message window did not work
Navigating messages with keyboard in message window did not display the correct previous/next message
Some elements still used animations with "prefers-reduced-motion" set
Visual and theme improvements
Non-default mail tab toolbar items are now migrated to Unified Toolbar
Removing items from message lists failed when only item remained in list
Printing failed in Thunderbird 114.0b3 & b4.
With "encrypt if possible" enabled and using an external OpenPGP key, the UI was slow to respond when adding message recipients in a compose window
Message selection behaves inconsistently
Quick Filter
Vertical view
Mail Toolbar settings have not yet been migrated to new Unified Toolbar
WebExtension APIs are currently broken
Thunderbird "Supernova" related bugs