It is a true wonder. How come I never heard of it before? This is the kind of service which you need to have when you are dealing with mails specially mass email lists. They will handle any number with ease. And support is truly great if anything goes wrong. Some of our clients were not receiving mails. When I approached them they directly without any request they cleared all the caches and voila. I can tell any other email service provider would have made me complain like a child before doing this. They are truly a 9/10 service.