We use it for our business emails which we send from outside office locations via VPN connection back home so its quite important these are secured all day long with this product.
The interface could have been better but i guess thats what you expect when using enterprise products like them! I would say give em try if u need an affordable option especially since their support team has great knowledge about how things work there too (which makes troubleshooting easier). Securing my mails sent out through vpn connections between different offices where one person works remotely at times while another stays localy working hard everyday -.