Zimbra Mail Notifier od David GUEHENNEC

Zimbra Mail Notifier checks your Zimbra webmail account and notifies the number of unread messages.
When new message arrive in your mailbox, a system notification is posted
You can view your next appointments (save in your Zimbra calendar) and be notified by the system.
Tracking ongoing tasks is also available.

Currently supports:
All websites using default zimbra login interface,
And specific websites : http://zimbra.free.fr and http://zimbra.aliceadsl.fr/

Not yet supported:
All websites using a pre-authentication interface except http://zimbra.free.fr and http://zimbra.aliceadsl.fr/

User with Mac OS X:
Don't forget to install Growl (http://growl.info/) to be notify by system notification.