Walgreens is testing a new digital program at its New York-based Duane Reade stores which involves sending mobile coupons via email or SMS to customers in ear their stores based on the weather. The store has partnered with Poncho, a weather alerts service, that personalizes daily weather alerts based on a consumer's location. The service will email users weather related coupons for products at the store based on the weather. For example, forecasts and Claritin and Allegra sent out a coupon on high-pollen index days to customers that said they suffered from allergies.