Some ways to get Denny's coupons include visiting coupon aggregate sites such as CouponSherpa.com and Coupons.com as well as deal sites such as Groupon.com, as of 2015. It is also possible to receive certain coupons from Denny's for signing up for its loyalty program or email list, though these offers may vary over time.
Both CouponSherpa.com and Coupons.com work with various retailers and establishments to publish current and valid coupons, either as online promo codes on the site or as links to printable options on external sites. The selection of Denny's coupons and promotions on these sites typically consist of deals and printable offers for use in restaurants, such as discounts for members of organizations such as the AARP or a discount on a meal. These sites also publish details about promotions from Denny's, such as the ability for a customer to receive a free Grand Slam breakfast on her birthday.
Groupon.com frequently contains exclusive printable coupons as well as special deals for select Denny's locations. The site also maintains a list of past deals and printable coupons. Denny's also offers a customer loyalty program that offers periodic discounts and the ability to earn coupons by eating at the restaurant. Additionally, Denny's offers a special one-time coupon for customers signing up for the company's email list.