Check the full post for video and screen shots of the Zimbra client on iPhone
Few things have generated as much buzz as the iPhone. According to USA Today, up to 700,000 iPhones have been sold. Some of the people who purchased them were Zimbra Customers and Users. They've been asking us in our support portal, as well as in our forums, if/how were we going to support the iPhone. . .and so far, our story as been iSync or using our standard client on Safari - which works quite well.
However, today we're announcing that we've developed a mobile web client for the iPhone that is 100% standards compliant, and will be included with ZCS 5.0. We will be bundling it into our Network and Open Source editions as a standard feature, much like the Standard HTML client. It's built upon a JSP tag library that we've developed which allows Customers to easily change the Zimbra UI to fit their needs.