How to use a Dunkin Donuts coupon
Dunkin Donuts regularly offers discounts and coupons when you subscribe to the company's "Dunkin' UpDDate" email list. Joining the email list also earns you a free beverage simply for signing up and an additional free beverage on your birthday. The Dunkin Donuts Facebook and Twitter pages often feature special sales, giveaways, and contests for social media followers and fans.
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