I have a client who wants to use http://www.swiftpage.com/ as their auto-responder, and I am not familiar with it at all.

Is it easy to use? Is it reliable? Are there any pros or cons I should be aware of?

He says it works with his ACT program, where he has his contacts and that's why he wants to use it. I suggested Aweber, and I am looking to see if I should try to convince him to switch to it (if it's better for him).