Release Notes

Thunderbird Desktop

Version 31.1.0 | Released September 2, 2014

Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

What’s Fixed


Fixed various theme issues relating to titlebars and toolbars (Bug 1007225, Bug 1026608, Bug 1041211, Bug 1046563, Bug 1054260)


Fixed an issue with IMAP being slow when looking for folders on certain server types (Bug 799821, Bug 859269)


Improved performance of autocomplete for large address books (Bug 984875)


Security fixes can be found here

Known Issues


Users of jp mac builds may have issues with no mail folders being displayed in the main window. Running Thunderbird in 32-bit mode temporarily will workaround this issue.


Installing extensions within Thunderbird requires download and installing as a file (bug 1081190)

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