Four times a year (Jan/April/July/Oct) the Direct Marketing Association (DMA) updates its consumer lists. It is these lists that the DMA sells to direct mail marketers, agencies and telemarketing companies. You can remove yourself from those lists for five years simply by sending a written request to:
Direct Marketing Association
Attn: Mail Preference Services
PO Box 9008
Farmingdale, NY 11735-9008
* Your opt out letter must include your name, mailing address and signature.