...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.
We love your service and get great results compared to the other providers.
Thanks for this great service. We are a small non profit with a practically non-existent staff, and handling our email list manually has become a huge burden. The pricing of all other services we've looked at is out of our reach.