Dunkin Donuts is offering free coffee to 1 million customers; here’s how to get it on May 19
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May 19, 2026
How to get free coffee from Dunkin’ On the morning of May 19th, Dunkin‘Promo codes will be announced. The first 1 million customers who enter a code in the “Deals & Rewards” section of the Dunkin’ app will have the…