Jeff began his direct marketing career humbly enough, entering gifts into a database as a volunteer with God’s Love We Deliver in New York City. That was almost three decades ago. Since then, Jeff has helped raise tens of millions of dollars for such organizations as God’s Love We Deliver, GMHC, City Harvest, Livability UK, Habitat for Humanity-New York City, National Alliance on Mental Illness (NAMI), The Interfaith Nutrition Network (The INN), and the National Parkinson Foundation. 

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Before forming Zeidman Associates, Jeff worked for Ammirati Puris Lintas (APL), at that time the world’s seventh largest advertising agency. At APL, Jeff guided clients—including UPS, Aetna, Ameritech, Compaq, and Lego—to use cutting-edge direct marketing techniques and technologies.

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For most of the 2000’s, Jeff served as a faculty member at Mercy College in New York, teaching direct marketing in their Masters of Direct Marketing Program. 

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Jeff received his master’s degree in direct marketing from

New York University.