If Zimbra would provide a syncML gateway, they would really become a serious player in the collaboration market.
Free programs to connect to SyncML gateways from windows mobile devices are already out there. And Nokia and Sony Erricsson uses SyncML as the native communication form.
In other words Zimbra would reach almost any Smartphone/PDA user by providing such gateway.
Just my 2 Cents.
Have a nice weekend all of You.