I like how easy it was to set up my email account for work use only (no personal accounts). It's secure so no worries there! The customer service has been very helpful as well when we have questions or issues about our setup/encryptions etc.. We are currently using this product at one of two locations but will be moving all mailboxes over once they upgrade their system next year too which should make things easier since everything can then go through 1 server instead of 2 different servers. Nothing really - just wish you could encrypt your entire mailbox rather than having separate folders encrypted separately from each other if thats what its designed for? This allows us access via VPN without worrying where someone may look into another folder within an individual user profile.