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Join UsVersion 123.0beta, first offered to channel users on January 25, 2024
Added support for OS-specific accent colors
Manual account configuration now implements form validation
Added option to show packet dump when OpenPGP fails to decrypt
UI density now affects multi-message view
Added Show more/less buttons to notifications in Account Hub
Folder alerts now display full path of affected folder
IMAP "Too Many Connections" alerts now display IMAP server name
Disabled support for LibrePGP v5 AEAD/OCB decryption
OpenPGP Key Manager filtering did not work
OpenPGP sometimes attempted to decrypt message with incorrect key
Autoconfig failed on servers that did not support OAuth2
Network settings window was blank
Selected row in folder pane did not always remain visible when using keyboard navigation
Hovering over folder does not always expand subfolders
Yahoo! and AOL account message filters only filtered most recent message match
Quick Filter settings did not persist when Quick Filter bar was turned off
Mail tab-specific Unified Toolbar buttons received focus incorrectly
Clicking "Sent unsent messages" in Outbox context menu while in offline mode did not prompt user to go online
"Confirm Deletion" prompt was incorrectly shown when deleting messages with Grouped By header also selected
Thread collapsing did not behave correctly when copying thread messages in multi-folder view
Opened ignored messages in a message thread/subthread were not marked as read in IMAP folders
Opening different attachments with the same name in different messages could cause attachment files to become conflated
Address Book scrolling did not work when using keyboard navigation
When creating new calendar, password prompt showed "rememberPassword" instead of "Use Password Manager to remember this password."
Overflowed attachment list could not be scrolled
Thread styling appeared on Grouped by Sort messages
Various visual and UX improvements
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Remote content warning was shown multiple times for the same message
Thunderbird slowed down significantly when opening email files (.eml)
Passwords disappeared from password manager list after applying and clearing filters
Cookies in cookie manager list disappeared after applying and then clearing filters
A selected attachment's filename in the mail reader was not visible
S/MIME encryption failed to encrypt if unsupported certificate type was encountered