The latest version of Mozilla's e-mail client is just about ready for public use, as the software publisher releases the first release candidate for Thunderbird 3.1, codenamed Lanikai. Available for Windows, Mac, and Linux, Thunderbird 3.1 RC 1 makes few changes to from the previous Thunderbird beta. The new quick filter bar has added contact, tag, and attachment support, as well as the ability to pin a filter even as you switch folders. A far more minor tweak, folders with new messages are now highlighted by default in blue, instead of black.
The numerous bug-fixes include preventing specific, popular add-ons such as Gmail Conversation View from crashing the e-mail client, saving drafts when written in offline mode, and several critical stability fixes.