Beta Notes

Redesigned recipient address fields (To, Cc, Bcc) as single-line input fields for multiple addresses instead of one line per address

WebExtension messages.update function extended to mark messages as junk or not junk.

Chat: IRC echo-message capability

Offline replication of LDAP address books now uses an SQLite database instead of a Mork database

Support for creating Mork-based address books removed

TLS 1.0 and 1.1 disabled

Calendar: Web Calendar Access Protocol (WCAP) support removed

Calendar: Task and Event tree colours adjusted for the dark theme

Attachments with one or more spaces in their names couldn't be opened under some circumstances

Tags were lost on messages in shared IMAP folders under some circumstances

Automatic address book conversion from Mork to SQLite failed in some circumstances

Setting the "Junk" keyword on a message did not clear the "NonJunk" keyword, and vice-versa

Signing and encryption icons in the composer status bar

WebExtension messages.update API failed to change message tags in IMAP folders

Retrieval of S/MIME certificates from LDAP failed

Incorrect forwarding of HTML messages caused SMTP servers to respond with a timeout

Calendar: When filtering tasks both by group and by task name, only the task name filter was applied

Calendar: Various parts of the calendar UI stopped working when a second Thunderbird window opened

Support for Client Identity IMAP/SMTP Service Extension

Support for OAuth 2.0 authentication for POP3 accounts

Focus jumping with recipient pills in addressing widget

To: field shown if the Newsgroup or Follow-up fields were in use

Address-parsing crash on some IMAP servers when preference mail.imap.use_envelope_cmd was set

In the Write window "Insert > Characters and Symbols" dialog not working

In the Write window message header fields were not dark in system dark theme

Calendar: Could not remove color for default categories

Calendar: Today pane did not retain width between sessions

Chat: OTR fingerprint verify dialog not working

Calendar: Lightning not updating to corresponding 73.0b2 version. Workaround: Set preference extensions.lastAppVersion to a value of 72.0 to force a refresh. Check version number in the Add-on Manager afterwards.

Opening the properties of a folder may hang on Mac

WebExtension toolbar button badges not displayed

Offline replication of LDAP databases may fail to replace an earlier copy. Workaround: remove or rename any existing database (probably named ldap.sqlite) from your profile before starting replication