We've essentially ditched Outlook (2000/2003) in favor of using the Zimbra Web Client for about 350 users. For at least right now we're still using the FOSS edition of Zimbra, which means no Outlook Connector option. So, with the FOSS edition at least, I would agree with you that the ZWC is the only way to get full functionality.
I can't say that the transition from Outlook to the ZWC has been entirely smooth. First of all, you are always going to get your users who are resistant to change. Beyond that though, as Rich pointed out, there are some bugs with the ZWC. (I'm planning on upgrading to 5.0.1 on Sunday, so I hope there aren't too many new bugs.) I wish I could convince my bosses to switch from IE to Firefox as our supported browser of choice, especially because I think the ZWC runs much better with Firefox, but as of yet I've had no luck in doing so.
I'm the #1 fan and advocate of the Zimbra web client in our company, but even I will admit that there are some things that a "fat client" like Outlook or Thunderbird do better, especially with regards to integration with Windows/Office. Not being able to do "File --> Send To --> Mail Recipient" from within Word or Excel, and not being able to select several files and drag them into an email are two of the things our users really complained about. If Zimbra could ever get those two things working with the web client I would be a very happy man.  |