Mail-in entry: mail a 3×5 inch card on which you have handprinted the keyword: CINCO50 and your complete legal name, mailing address (PO Boxes not permitted), phone number, valid email address, date of birth, and your signature to certify your eligibility to participate in the Sweepstakes, consent to and compliance with these Official Rules and all applicable regulations and mail it to: CINCO50, P.O. Box 40165, Phoenix, AZ 85067