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Thunderbird is an open source project, which means anyone can contribute ideas, designs, code, and time helping fellow users.
Join UsVersion 73.0beta, first offered to channel users on January 31, 2020
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