Simple to use, very intuitive. But, for me, it was their customer service that I noticed. I had an issue with a form sending emails twice. A slight irritant at worse but not a critical issue. I contacted them to report the bug. I was quickly responded to, on a Sunday, by Mark. Who not only quickly addressed the issue but pushed an update to fix the problem. Initially, he thought it might be an issued with my WP plugins and where most companies might end it there and tell me to dig into the problem myself, Mark was relentless. He downloaded the site’s source code, ran some tests and found a bug that was causing the problem. As long as they are around, you got a customer for life. Thanks for your help.