...having found your service by chance, we've been completely happy and pretty surprised actually. You offer a lot of features, with a very reasonable & logical rate system. ...How much your service will help is possibly beyond your understanding, but I'm sure you've heard that from other people using your service.
Your system is the best out there! I have used bravenet.com and listpower.com...it is just really easy using your system.
I have found Ezine Director to be one of those tools that increases productivity a lot.