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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 94.0beta, first offered to channel users on October 6, 2021
Opening a news:// URL now works if an account is not configured for that news server
Preference add to disable automatic pausing RSS feed updates after a fetch failure
New message detection for non-INBOX IMAP folders improved
"Discover OpenPGP Key" context menu item is no longer displayed when a key is already available
NNTP account set up moved to its own wizard; "Other accounts" wizard removed
Account Manager UI updated
Preference for OTR encrypted conversation logging moved to Protocol settings
SMTP Auth Usernames with special characters were not properly encoded, leading to unexpected authentication failures
Multi-message view was not fully scrollable
Icon to clear the global search input (and others) was not displayed
Closing a tab with middle-mouse click did not work
Attachment bar in message compose window was not keyboard accessible
"Repair Text Encoding" menu item did not work
Vertical scrollbar in "Conversations" chat panel did not work correctly
Chat account "Advanced Options" dialog had no clickable buttons on macOS
Saving a copy of a calendar invite (More -> Save As Copy) did not work
Right clicking on a calendar in the calendar list did not select the calendar
Events in the first or last week of a month were not always printed when printing a month view
Accessibility improvements; clearer display of area of focus
Various theme improvements, HiDPI improvements
No theme preview for Dark and Light themes was displayed
"Attachments" menu panels for attached files were empty
Stability improvements
BCC-only messages could not be sent from the Outbox
Default mail headers were set incorrectly when the value contained a colon (:)
Mail tabs could not be closed using the context menu
"Print" context menu was still shown when no message pane was displayed
Default DSN request was not set when using "Edit as New Message"
RSS feed attachments could not be saved
Calendar "start of the week" changed from Sunday to Saturday after updating to 94.0b1
Various Calendar event dialog fixes
Thunderbird did not send the QUIT command when closing an SMTP connection
Thunderbird redownloaded already locally stored messages when "Allow antivirus clients to quarantine" was enabled.
Windows tray icon did not reappear after restarting Windows Explorer
Virtual Folder Properties dialog was too small for locales with lengthy strings
Compose window attachment drag and drop fixes
CardDAV address books without a name did not work
Thunderbird tried to refresh disabled and manual-only calendars when going from offline to online
Theming improvements
New mail popups were displayed while running full screen applications
Messages received with non-standard "koi8r" encoding were not supported
Various macOS stability improvements
Drag and Drop area for file attachments on Windows was incorrect
PDF attachments opened in Firefox while composing an email
Importing an ICS file with TODO items failed