Download Mozilla Thunderbird 12.0

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The Mozilla Foundation has released Thunderbird version 12.0. Mozilla Thunderbird is an open source client for mail and newsgroups, with features such as support for different mail and news accounts, a junk mail filter, spell checker and a customizable appearance. Version 11 is based on the latest version of Mozilla Gecko, which should lead to better performance, among other things. Furthermore, the search functionality has been improved and of course a lot of bug fixes have been implemented. The release notes for this release can be found below.

New:

  • Global Search results now include message extracts in the results

Fixed

  • Various security fixes
  • Various improvements to RSS feed subscription and general feed handling

Developer

Known Issues

  • If you are unable to view content for your RSS feeds in the Wide View Layout, you may need to disable the Lightning Calendar add-on if you have it installed or switch to Classic View and restart Thunderbird. (see 531397)
  • Running TB 12 with local mail folders and pop3 mail filters may produce summary files that aren’t correctly read by previous versions of Thunderbird. If you decide to go back to a previous version of Thunderbird after running TB 12, you should delete the .msf files for your local folders and pop3 accounts, or repair the folders using the folder properties dialog, to avoid potential data loss.

The following downloads are available:
Mozilla Thunderbird 12.0 for Windows (English)
Mozilla Thunderbird 12.0 for Linux (English)
Mozilla Thunderbird 12.0 for Mac OS X (English)
Mozilla Thunderbird 12.0 for Windows (English)
Mozilla Thunderbird 12.0 for Linux (English)
Mozilla Thunderbird 12.0 for Mac OS X (English)
Mozilla Thunderbird 12.0 for Windows (Frisian)
Mozilla Thunderbird 12.0 for Linux (Frisian)
Mozilla Thunderbird 12.0 for Mac OS X (Frisian)

Version number 12.0
Release status Final
Operating systems Windows 7, Windows 2000, Linux, Windows XP, macOS, Windows Server 2003, Windows Vista, Windows Server 2008
Website Mozilla Foundation
Download
File sizes

17.10MB – 34.80MB

License type Freeware
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