We're about to make Zimbra to our strategic Groupware system for ourselfs and for our customers.
The only thing which urgently should be possible is a real global address list. In most cases in switzerland we have companies with about 20 to 50 max 100 employes but a huge central customer address list (in our case 1800 contacts) which is shared across the company.
We made a workaround with a shared contacts folder across the user accounts (see http://www.zimbra.com/forums/adminis...tml#post171470)
But for the mobile access we need to have access to this shared addressbook through ActiveSync Global Addressbook access.
So we need a workround to anyhow configure the activesync part that way that the mobile gal access searches this shared addressbook. If this is solved, we have here a potential of about 500 paid mailboxes. But this function (specially in combination with sugar crm, (we wrote a integration for sugar->zimbra)) would be a decision maker.