dm refers to DM magazine.

DM is the abbreviation of Direct Mail Advertising in English, that is, direct mail advertising, also known as direct mail advertising, which refers to the form of advertising that delivers advertisements directly to the advertising audience through the postal system.

English Direct Mail Advertising, the earliest Chinese name is "direct mail advertising". Early DM also had many nicknames, such as "mail advertising", "direct mail advertising", "tabloid advertising", etc. It is generally believed that only advertising through the post office can be called DM advertising.

Content form

1. Discount coupons. When carrying out promotional activities, coupons with preferential conditions and measures are attached to attract consumers to participate.

2. Sample catalog. Retail companies can introduce in detail the samples, photos, trademarks and content of various commodities they operate.

3. Single poster. A single poster carefully designed and printed by an enterprise to promote its corporate image, products, services, etc.