Thunderbird Desktop
Version 93.0beta | Released September 9, 2021
Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla.
These notes apply to Thunderbird version 93 beta 5 released September 28, 2021.
System Requirements: Details
- Windows: Windows 7 or later
- Mac: macOS 10.12 or later
- Linux: GTK+ 3.14 or higher
What’s New
new
Added config option to more aggressively warn sender about having many public recipients to an email (mail.compose.warn_public_recipients.aggressive)
new
Removing events from a calendar now prompts for confirmation
What’s Changed
changed
Replace "About Junk Mail" dialog with a link to the support page
changed
Support for importing and exporting calendars from Outlook CSV format was removed
changed
Saving a single message as .eml now uses a unique filename
changed
Thunderbird can now be used without setting up a mail account
What’s Fixed
fixed
Importing a profile from a ZIP file greater than 2GB failed
fixed
Message download progress was calculated incorrectly
fixed
IMAP startup performance improved for accounts with a multitude of folders
fixed
OpenPGP public key was attached multiple times when forwading a message
fixed
Windows tray icon disappeared if Thunderbird was started by a shortcut with "Run" set to "Minimized"
fixed
Delivery Status Notifications were only shown for the first recipient
fixed
Composing a message from a template with attachments failed due to a temporary file being removed
fixed
Multiple bulk mail notification warnings were displayed
fixed
Windows tray message count badge displayed the "unread" count instead of the "new" message count
fixed
Some downstream Thunderbird builds were incorrectly checking addons for a signature, causing all addons to be disabled
fixed
Attached VCards displayed as plain text when an email was HTML formatted
fixed
Mailing list names with non-ASCII characters incorrectly displayed with an error
fixed
LDAP directories were not searched for matches when adding recipients to an email
fixed
Clicking "Connect to an LDAP address book" in account setup opened CardDAV setup dialog
fixed
IRC server connections did not automatically retry after a timeout
fixed
Multipart messages containing a calendar invite did not display any of the human-readable alternatives
Fixed in Beta 2
What’s Fixed
fixed
Buttons on compose window dialogs did not have a visual indication of focus
fixed
Dropdown fields in message compose window were unreadable on Windows 7 with a dark theme
fixed
Attachment sizes were no longer included on printed emails
fixed
Addressbooks set up with autoconfig showed no search results
fixed
LDAP search queries containing non-ASCII characters produced no results
Fixed in Beta 3
What’s Fixed
fixed
A message sent with multiple attachments sometimes only sent one
fixed
Recipient pill context menus on macOS did not work
fixed
Decrypting binary attachments when using an external GnuPG configuration failed
fixed
Message Security popup did not display all recipients due a missing scrollbar
Changed and Fixed in Beta 4
What’s Changed
changed
Thunderbird will now warn if an S/MIME encrypted message includes BCC recipients
What’s Fixed
fixed
Thunderbird sometimes attached the wrong messages when forwarding multiple messages by attachment
fixed
Thunderbird did not re-prompt for an SMTP username if one was not provided
fixed
Messages with BCC recipients that were held in the Outbox did not retain the BCC header when moved to the Sent folder
fixed
Some calendar days were displayed incorrectly or duplicated (eg. two "29th" days of a particular month)
fixed
Thunderbird displayed reminders for events that were cancelled or declined
fixed
MS Teams meeting event descriptions were unreadable when stored on Google Calendar
fixed
New Feed Account dialog did not honor dark mode
Fixed in Beta 5
What’s Fixed
fixed
Dragging and dropping multiple email attachments between windows did not always copy all attachments
fixed
Recipeint address pills in an error state could incorrectly merge with mailing list pills when expanding the list
fixed
Account name fields in the account manager were not big enough for long names
fixed
LDAP searches using an extensibleMatch filter returned no results
fixed
Public ICS calendars served with an incorrect Content-Type could not be added
fixed
Setting a CalDAV calendar to manually update had no effect
fixed
CalDAV calendars set to read-only became writable after restarting Thunderbird
fixed
Phantom event was shown at the end of each day in Calendar week view
