I love Aweber E-mail Marketing!
Actually you would be seeing this page as a result of their awesome service.
What To Look For:
1. Deliverability
It is very important your e-mails get delivered so you make sales and people see them
2. Auto Responder Customization
3. Affordability ($1 Trial for 30 Days)
4. Tracking
You can track everything with Aweber.
Important to see what e-mails are working and what are not
5. Customer Support
I was completely new to this and their videos and support helped me learn it all, thank god I found someone so easy to use!!
Now I know better, this could have been incredibly complex using anyone else.