Download Mozilla Thunderbird 78.5.0

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The Mozilla Foundation has released version 78.5 of Thunderbird. Thunderbird is an open source client for e-mail and newsgroups, with features such as support for various mail and news accounts, a spam filter, spell checker, and a customizable appearance. In version 78, a dark mode has been added and other parts of the interface, such as the icons and the screen for composing an email, have also been overhauled. Furthermore, the Lightning calendar add-on is now a standard part of the program, there is a new wizard for the first use and only MailExtensions add-ons are supported. The changelog for this release looks like this:

What’s New:

  • OpenPGP: Added option to disable attaching the public key to a signed message
  • MailExtensions: “compose_attachments” context added to Menus API
  • MailExtensions: Menus API now available on displayed messages

Changes:

  • MailExtensions: browser.tabs.create will now wait for “mail-delayed-startup-finished” event
  • OpenPGP: Support for inline PGP messages improved
  • OpenPGP: Message security dialog showed unverified keys as unavailable
  • Chat: New chat contact menu item did not function
  • Various theme and usability improvements
  • Various security fixes

Version number 78.5.0
Release status Final
Operating systems Windows 7, Linux, macOS, Windows 8, Windows 10
Website Mozilla Foundation
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License type GPL
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