I have over 100 users that use the outlook connector and it syncs everything (contacts, calendar, mail, etc) just fine. The mobile part syncs everything flawlessly as well. To me, Zimbra isn't an exchange knockoff, I put it in a class of its own. I have never ran citadel, but have heard good things about it. But Zimbra Desktop does suck imo, but hopefully it will get better.
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I have over 100 users that use the outlook connector and it syncs everything (contacts, calendar, mail, etc) just fine. The mobile part syncs everything flawlessly as well. To me, Zimbra isn't an exchange knockoff, I put it in a class of its own. I have never ran citadel, but have heard good things about it. But Zimbra Desktop does suck imo, but hopefully it will get better.