Direct Marketing Association (DMA) is a trade organization which seeks to advance all channels of direct marketing. DMA was founded in 1917. It is based in the United States, but its members include companies from 48 other countries as well, including half of the Fortune 100 companies, as well as nonprofit organizations.
The Direct Marketing Association provides a method for consumers to opt out of various kinds of direct marketing, including credit and insurance offers by mail, catalogs, magazines, and other direct mail offers.