Payments can be mailed by using the address listed below. We do recommend that if you’re going to send your payment by mail, that it is sent in advance to the payment coming due. This allows time for the payment to be received on or before its due date. Please be sure to include your name and account number on the check that you send, to ensure your funds are applied properly. Gateway Financial Solutions PO Box 3257 Saginaw, MI 48605