66% of US Marketers Use Postcards Leave a reply The most common direct mail formats used by U.S. marketers are Postcards (66%), Newsletters (66%), Self-Mailers (56%), Catalogs (48%), and Packages (45%). SOURCE: USPS Direct Mail Report Share: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Click to share on LinkedIn (Opens in new window) LinkedIn Click to email a link to a friend (Opens in new window) Email Click to print (Opens in new window) Print