We are a district of 6000 students and 700 staff and have been successful in setting up a BYOD system district wide. We require users to electronically register (up to 2 devices) on our network and monitor and filter access via a Palo Alto next generation firewall with integrated sync with AD. We are also a piloting Google Docs as we transition from Exchange. We are looking for a Gmail archiving/filtering solution like Gaggle, ArcMail, Mailarchiva etc. Anyone have any thoughts? With so many users the price per user option can get pretty high pretty quick.