Do I have to visit a new and different site or download and install some kind of extra software to use SmartPay?
No, you can enroll to start using SmartPay TODAY, right within the SmartMessage Center you are used to using on CircleUp.com. There is no additional software to download or install. When enrolling in SmartPay or paying by SmartPay, you will be taken to the Amazon.com website to complete the process, but this is very easy and only takes a few minutes or less.