Answer:
False.
Step-by-step explanation:
A direct mailer can be defined as a form of marketing which involves the use of a mail service such as a courier or postal service to physically deliver a piece of promotional product or material to a target audience such as home or business. Some examples of a direct mailer are catalogs, postcards, solicitation letters, flyers, coupons, brochures etc.
Hence, a direct mailer falls under the category of marketing, not sales.