You can text PERKSto 386546 and reply back with your email address to score a coupon valid for FREE medium beverage of your choice! Note that the details regarding requesting your coupon will be sent to the email provided within 48 hours of signing up. Once you receive the email, you will need to create a profile and provide your mailing address and birth date. Then, they’ll mail you a coupon for a free medium beverage of your choice (and one on your birthday!).