Simon (S2) writes "Thunderbird 0.9 is now available for download! New features include Saved Search Folders (aka Virtual Folders) which allow you to display messages based on previously set search criteria across multiple folders. Message Grouping allows you to organize e-mail in a folder by grouping them based on various attributes like Date, Sender, Label, etc. Thunderbird 0.9 also includes numerous bug fixes and other improvements. For more information, see the release notes. Builds can be found on the mozilla.org FTP server or in the release notes above."