Thunderbird 151.0

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 151.0 changelog:

What"s new

Enable Thundermail OAuth sign-in with account auto-configuration
Enable users to override OAuth provider details for EWS accounts
Tasks can be sorted by created or modified date

Changed

Reinstated default application check when Thunderbird starts
OpenPGP public key no longer attached by default in signed-only messages

What’s Fixed

Thunderbird could crash when processing message headers
Thunderbird could crash on startup
Calendar view tabs were not properly keyboard accessible
Thunderbird could crash when processing new incoming messages
On macOS, dragging attachments out of Thunderbird created multiple copies
Cancelling a newsgroup posting was not possible
Some IMAP emails showed current time instead of correct received date
Search result count was missing when using "Find in Message" or Ctrl+F
Search results showed older irrelevant emails before newer exact matches
Reply with selected text lost formatting for HTML messages containing
Multipart/related attachments were not preserved when editing or forwarding
Forwarded malformed MIME email had empty body and extra attachment
OWL add-on description was not visible in Account Hub for non-en-US locales
Account Hub prompted for password after OAuth login, causing Outlook setup failure
Auto-discovered Account Hub values were not preserved for manual editing
Account Hub links for encryption and signature opened the wrong account
Virtual folders did not update correctly for filtered POP3 messages
Thunderbird could crash in spam filtering
Using thunderbird -compose with double quotes made last email address invalid
With auto-mark-read disabled, large mail still marked as read during load delay
It was not possible to create date-only all-day tasks
Task context menu (right-click) had several disabled menu items
"Current Tasks" view showed past and finished tasks instead of only unfinished
Visual and UX improvements
Security fixes

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