What types of Direct Mail Marketing are Effective? The most effective types of Direct Mail Marketing are Post Cards, Catalogs, letters, Dimensional Mailers & Self Mailers. yptadminLLC2023-09-12T15:13:10+00:00September 12, 2023|Direct Mail Marketing| Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail