Thunderbird 137.0

Thunderbird

Thunderbird is a free, open-source, cross-platform application for managing email and news feeds. It is a local (rather than a web-based) email application that is powerful yet easy-to-use.

Thunderbird is clean and elegant by default, but easily customizable to match your workflow and visual preferences. It is loaded with unique and powerful features.

Thunderbird is developed, tested, translated and supported by the folks at Mozilla Corporation and by a group of dedicated volunteers. Thunderbird gives you control and ownership over your email. There are lots of add-ons available for Thunderbird that enable you to extend and customize your email experience.

Thunderbird gives you IMAP/POP support, a built-in RSS reader, support for HTML mail, powerful quick search, saved search folders, advanced message filtering, message grouping, labels, return receipts, smart address book LDAP address completion, import tools, and the ability to manage multiple e-mail and newsgroup accounts.

Thunderbird 137.0 changes:

File names are now used when storing mail folders (Windows only).
Disable Linux system tray icon until it gains functionality

What’s Fixed

In-app notifications did not display correctly in high contrast mode.
Repair folder did not fix mbox files produced on MacOS before Thunderbird 1.0.
Edit menu entries missing when group header selected in "Grouped by sort" view.
IMAP folder "Undelete" performed "Delete" when mixed messages were selected.
In RSS feeds, the space bar did not scroll the message like it did in emails.
Slow performance opening an .eml file in a profile with many folders.
Threaded search view was not updated correctly when sorted by date received.
Line spacing changed unexpectedly in the message list with the default font size.
Saved message list selection was discarded when user made a new selection.
Replying from local or unified folders failed when the message pane was hidden.
Message security panel strings were used in the wrong places.
Importing an OpenPGP public key with whitespace failed.
Unable to open attached signed OpenPGP .eml message.
Right-clicking "Decrypt and Save As..." on an attachment file failed.
Searching during shutdown could cause crash.
Failed news message sending could close the compose window unexpectedly.
Having a corrupt address book database prevented sending mail.
Forwarding messages as attachments could use the wrong MIME type.
Two-factor auth via text or email did not work with Office 365 using Oauth2.
Account settings menu could be loaded twice.
No gap existed between Back and Forward buttons in the Feed Account Wizard dialog.
Thunderbird could crash when importing mail
Unable to auto-discover Address Book on Radicale server.
Mark-Of-The-Web was not applied to attachments saved via drag and drop.
Some messages could not be scrolled due to hidden overflows in inline styles.
Clicking a 'mid:' link could clear the thread pane and cause errors.
Performance regressed when moving/copying messages on Windows.
Automatic compact did not attempt to compact all folders when error encountered.
Slow performance when moving bulk messages from IMAP to local.
Crossposting news article was not possible if newsgroups on different servers.
IRC channel was not visible after restart.
Unable to view full certificate chain from the "View Signature" button.
Visual and UX improvements
Security fixes