I was using constant contact as our email marketing solution for years but it was becoming too expensive. I tried out Getresponse and what I didn't like was the lack of customizable options compared to constant contact. If you need to really change the look of your email, then I do not think this is the best option. What I did like about getresponse was that had inbox preview. You can see what the email will look like using different emails like gmail, yahoo, outlook, etc. Price is good if you have a very high volume. For us we went back to constant contact.