Something to think about Kayla (for the future) is also to offer BES service for Blackberrys (and other phones now) along with the Exchange hosting. For those not into "crackberries", BES offers wireless syncing with the exchange mailbox in adddition to high speed data for third party applications (like ssh, rss readers, and IM programs).
I have BES/Exchange hosting with a provider now and love having my web servers email deliveried instantly to my blackberry.
Would be nice to have web & mail all in one house though
