ProDUNKtivity Week
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How to Get Free Coffee at Dunkin’ on December 29: Promo Code Details and ProDUNKtivity Week Offers
Dunkin’ is giving away up to one million free coffees on December 29, 2025, as part of its ProDUNKtivity Week. Here’s how to claim your free cup using the promo code and what other deals are available this week.