Today Mozilla announced the availability of Thunderbird 1.0. This standalone email application is a great alternative to Microsoft Outlook, Outlook Express, Apple’s Mail.app or Eudora. Thunderbird is a free download and comes packed with many features including labels, junk mail filters, HTML mail composition, smart folders, message encryption, digital signing, message grouping (threading), great search features, IMAP/POP support, RSS reader and more. Plus you can add themes and extensions to Thunderbird to customize the email application even more. Check out Thunderbird for yourself and see how great email can be.
Thunderbird Discussion