Thunderbird 78.6

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 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.

What's new:

  • MailExtensions: Added browser.windows.openDefaultBrowser()

Changes:

  • Thunderbird now only shows quota exceeded indications on the main window
  • MailExtensions: menus API enabled in messages being composed
  • MailExtensions: Honor allowScriptsToClose argument in windows.create API function
  • MailExtensions: APIs that returned an accountId will reflect the account the message belongs to, not what is stored in message headers

Fixes:

  • Keyboard shortcut for toggling message "read" status not shown in menus
  • OpenPGP: After importing a secret key, Key Manager displayed properties of the wrong key
  • OpenPGP: Inline PGP parsing improvements
  • OpenPGP: Discovering keys online via Key Manager sometimes failed on Linux
  • OpenPGP: Encrypted attachment "Decrypt and Open/Save As" did not work
  • OpenPGP: Importing keys failed on macOS
  • OpenPGP: Verification of clear signed UTF-8 text failed
  • Address book: Some columns incorrectly displayed no data
  • Address book: The address book view did not update after changing the name format in the menu
  • Calendar: Could not import an ICS file into a CalDAV calendar
  • Calendar: Two "Home" calendars were visible on a new profile
  • Calendar: Dark theme was incomplete on Linux
  • Dark theme did not apply to new mail notification popups
  • Folder icon, message list, and contact side bar visual improvements
  • MailExtensions: HTTP refresh in browser content tabs did not work
  • MailExtensions: messageDisplayScripts failed to run in main window
  • Various security fixes

Known issues:

  • Thunderbird performs sluggishly on macOS Big Sur

Download: Thunderbird 78.6.0 for Windows (EN/US) | 64-bit | ~50.0 MB (Open Source)
Download: Thunderbird 78.6.0 for Linux (EN/US) | 55.5 MB
Download: Thunderbird 78.6.0 for Mac OS (EN/US) | 66.3 MB
Download: Thunderbird 78.6.0 in other languages
View: Thunderbird Website | Release Notes | Screenshot

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