Summary (tl;dr)

Dunkin' is offering one million free hot or iced coffees nationwide on December 29, 2025, to Dunkin' Rewards members who use a special promo code in their mobile app.

Essential Background

The period between Christmas and New Year's is often perceived as a "holiday drag" or the "least productive week of the year," characterized by a slump in routines and energy levels. To counteract this, businesses often introduce promotions to stimulate customer engagement during this typically quiet time.

The Full Story

On December 29, 2025, Dunkin' launched a "proDUNKtivity" campaign, providing one million free hot or iced coffees of any size to its Dunkin' Rewards members across the United States. Customers can redeem this offer by entering the promo code "PRODUNKTIVITY" in the Dunkin' app. This single-use promotion is valid solely on December 29 or until the one million coffee limit is reached, whichever comes first. However, once the coupon is loaded today, some sources suggest it can be redeemed until January 3rd. This free coffee giveaway initiates a week of various promotions from Dunkin', including future merchandise sweepstakes and a free donut offer.

Why It Matters

This nationwide promotion is designed to invigorate customers during a traditionally slow period at the end of the year, offering a "pick-me-up" to foster "produnktivity" and combat post-holiday sluggishness. The trending search terms related to "Dunkin free coffee" indicate strong consumer interest in this offer, highlighting the effectiveness of such promotions in driving app engagement and store visits during the holiday season.

Geographic Location

• United States (nationwide promotion at participating Dunkin' locations)