The Zimbra Desktop team has been putting together some very cool things recently!
In addition to your Zimbra accounts, they've worked to bundle aggregate account access for IMAP/POP3 & even gave easy configuration presets for connecting to your Ymail, Gmail, or AOLmail.
Webtide/Comet/Jetty have just about brought push email to the desktop; and as I'm typing this I just dragged a file into my Zimbra Desktop prism window where it seamlessly attached to my email. I also like to play with skins, and just tested out a change without connecting to one of my many test servers or firing up a full ZCS install on my laptop.
If you've seen our "Your Email: Anytime & Anyplace" ads you've gotten the chance to enter our free Mac contest, and we figured it's about time to let the community know about it:
Test-Drive Zimbra Desktop & you could be the winner of a brand new MacBook Air!