Thunderbird

I am a great fan of Thunderbird. I use it to handle all my mails. Since, I have Ubuntu 9.10, Karmic Koala installed I was using Thunderbird 2.0 by default. A few days back, I thought, why not use the latest version. May be I loved its codename, shredder , but if you are a Thunderbird user then you should upgrade to this release. It has so many new features.