The best thing about this product is that it has an integrated system of security, which allows you to control access from anywhere in your organization (mobile or desktop).
It's also very easy for users who have never used any kind software before as well those with no technical skills at all! I don't like how expensive some features are but overall i'm satisfied by their service quality so far since they've been helping us solve our email problems over last few months now!! We're solving issues related mail delivery delays/failures etc..