Beta Notes

Thunderbird Desktop

Version 90.0beta | Released June 3, 2021

Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

These notes apply to Thunderbird version 90 beta 3 released June 29, 2021.

System Requirements: Details

  • Windows: Windows 7 or later
  • Mac: macOS 10.12 or later
  • Linux: GTK+ 3.14 or higher
Thunderbird 90.0b2 enables a new LDAP implementation. As with any major change, bugs may be present. The original behavior may be restored by setting the preference "mailnews.ldap.jsmodule" to false.

What’s New

new

Enable redirect of messages

new

Allow showing empty CC/BCC rows in compose window

new

Keyboard shortcuts to access To/CC/BCC fields of compose window

new

First iteration of new address book user interface: Set mail.addr_book.useNewAddressBook to true to enable

new

CardDAV address books automatically detected based on provided user information

new

Prompt to choose the identity of an accepted calendar invite when no identity matches the event attendees list

new

Support mid: URL scheme for Related Links in calendar event dialogs

new

Latvian language support

What’s Changed

changed

Printing UI updated

changed

Default IRC server for new chat accounts changed to "libera.chat"

What’s Fixed

fixed

Recipient pills used with contacts or attachments side bars could result in two widgets being "active"

fixed

After a public bulk mail notification, additional recipients could be erroneously discarded

fixed

Dragging addresses from contacts sidebar to address fields moved selected pills

fixed

Sending an email containing HTML links with spaces in the URL sometimes resulted in broken links

fixed

SMTP server error messages were not displayed in error dialog

fixed

Partially downloaded messages displayed in a stand-alone window did not refresh after clicking link to download the rest of the message

fixed

Manually runnning filters on a maildir folder did not work

fixed

Saved search virtual folders were not retained after restarting Thunderbird

fixed

Drag & drop operations could be disrupted by incoming mail notifications

fixed

Dragging a folder from an authenticated IMAP server to a not-yet authenticated server fails

fixed

Preferences: Preview of selected chat theme was not displayed

fixed

Chat account settings did not always save as expected

fixed

Matrix chat support improvements

fixed

LDAP address books did not display multi-valued attributes

fixed

Today was difficult to pick out visually in the month/multiweek calendar views

fixed

Columns in Today Pane were not resizable

fixed

Calendar event text could render outside the confines of the event block

fixed

Event time and event name were not vertically aligned

fixed

Related Links in events were not clickable

fixed

Improved formatting of even descriptions with long links, such as Zoom invites

fixed

After switching tabs, day and week calendar views did not keep scroll position

New, changed, and fixed in Beta 2

What’s New

new

OpenPGP: Added config option to disable encrypting saved drafts

What’s Changed

changed

LDAP client code replaced with Javascript implementation

changed

Sending a message will now fail if any recipients are not accepted by the SMTP server

changed

Error messages from an SMTP server are now displayed to the user

What’s Fixed

fixed

Mail folder pane was not visible after completing manual account setup on a new profile

fixed

Multiple overlapping new message alerts could be displayed at once when then "Use the system notification" preferences was unchecked

fixed

Account setup wizard did not display the selected protocol for automatically configured accounts when only one protocol was available

fixed

Calendar: The wrong month was sometimes selected for printing

Fixed in Beta 3

What’s Fixed

fixed

New message notifications were duplicated if additional messages were received without being read yet

fixed

Address Book: double-clicking a contact in an LDAP directory did not open the edit dialog

fixed

Calendar: A parsing error for alarm triggers of type "DURATION" caused sync problems for some users

fixed

Various theme improvements

Learn What’s Next

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