With the iPhone 3G and the iPhone 2.0 software for the first iPhone generation and the iPod touch Apple also introduced Microsoft Exchange support.
For a client like Outlook, but also e.g. for my Nokia E61, Zimbra Server will look like and behave lika an Exchange. That means you can simply point Mobile.me (me.com) or your iPhone/iPod at your Zimbra mail server and done. You get mail, calendar and contacts push over the air. Note: Make sure you diable your IMAP account for the same server should you have one, otherwise you might confuse yourself…
