Every Door Direct Mail® (EDDM®) service is perfect for promoting your business or service within a particular community. If you’re having a sale, opening a new location, or offering coupons, EDDM can help you send postcards, menus, and flyers to the right customers. Use the EDDM Online Tool to map zip codes and neighborhoods—even filter by age, income, or household size using U.S. Census data through the USPS.