ThunderbirdThunderbird
Release Notes

v.12.0, released: April 24, 2012

Check out what’s new and known issues for this version of Thunderbird below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

If interested, please see the complete list of changes in this release.

What’s New

  • NEW
    Global Search results now include message extracts in the results
  • FIXED
    Various security fixes
  • FIXED
    Various improvements to RSS feed subscription and general feed handling
  • DEVELOPER
    Thunderbird now supports add-ons that provide different types of local mail storage

Known Issues

  • Unresolved
    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)
  • Unresolved
    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.