Overall, I would have to say we have had a pleasure using their service, but have had a number of issues that required us to get support, and support was one of the most tedious parts of the service. Our email list is only around 15,000 so I know we're not one of the major players on their radar, but while they make it easy to send out emails, they don't do a great job of communicating changes or issues with their services. Since we do a lot of timely communications on new deals and what-not, having an email take six hours to go out can be the difference between success and failure for a campaign. In many cases, people end up opting out because they are tired of getting emails after a deal is already over. We would probably move away from them if we weren't too much tied to their system. Considering hiring someone part-time to help us move to another platform and to re-design our emails.