The Hauser Group combines the following companies: Hauser List Services, Inc. is the industry leader in mail delivery tracking, list and telemarketing security for strategic applications in promotion campaigns, list management and quality control. National Marketing Intelligence, Inc. is a unique and cost-effective primary and secondary research resource for surveys, "secret shopper" projects, competitive analysis, and a range of other information development projects.. Presence Program! The proactive method of following up your mailing campaigns.