I've been using SmarterMail since version 3, but have never gone head-to-head with Exchange. Now I have the opportunity to bid on an account currently hosted on Exchange. A few years ago I looked at the synch options, and found most required a 3rd party add-in like Funambol. The SmarterMail version 9 info indicates (for example) that over-the-air synch with Blackberry devices STILL requires a 3rd party app like AstraSync and NotifySync. My question is-- in real world terms-- what are features Exchange Server has that SmarterMail version 9 DOES NOT? The account up for bid is using Exchange 2003 and Blackberry Enterprise Server (BES). They are looking for an alternative to Blackberry and will soon be field testing some Droid devices, so the BES may not be an issue in the near future. But before I get blind-sided with "Exchange can do this, can yours?" questions, what features do Exchange users consume that SmarterMail won't be able to provide? Please, no holy wars about MS being evil. Exchange is a killer app, and we know it. I just need to know how "close" SmarterMail is getting, and what is still missing, without the marketing spin.