Get a free $50 deposit when you sign up for direct deposit with AmEx Serve Card and receive 2 deposits of $250 or more. There is no monthly fee or annual fee to use it, and no minimum balance to maintain. The AmEx Serve Card functions as a digital prepaid debit card (you can also use it in person) that lets you send or receive money via text, email and Facebook. It also has free app for iPhone, Android, or Windows devices that lets you move money or make payments from your mobile device without any fees (unlike Amazon Payments or PayPal). You can use it anywhere AmEx cards are accepted, and will automatically be covered by AmEx purchase protection and other AmEx benefits.