Dunkin' Donuts is helping America get through the longest day of the year with a delicious Bottled Iced Coffee. And did we mention it's free?
For one day only, June 21st, fans can take advantage of the free offer and try one of four Bottled Iced Coffees.
— Dunkin' Donuts (@dunkindonuts) June 21, 2018
After receiving your free coupon, customers can head to any participating location and get their free coffee in either Mocha, French Vanilla, Original or Espresso flavors. The beverages are coffee and milk blends.
To receive the coupon, just email Dunkin' Donuts at firstname.lastname@example.org.
To find a participating location once you get your coupon, click here.