American Express Serve is a full service reloadable prepaid account in the form of a card that can be used virtually anywhere American Express Cards are accepted and at ATMs worldwide. You can add cash for free, pay bills online, and directly deposit your paycheck to enjoy fast, simple access to your money. The best part? There are no hidden fees. In this age where security is of utmost importance, it’s nice to have a safe and reliable full service reloadable prepaid account such as Serve.