direct mailer(n = noun.group) - a distributor who uses direct mail to sell merchandise;
is a kind of distributor

direct, direct action, direct antonym, direct contrast, direct correlation, direct current, direct discourse, direct dye, direct evidence, direct examination, direct fire, direct flight, direct line, direct loan, direct mail, direct marketing, direct object, direct primary, direct quotation, direct sum, direct support, direct supporting fire, direct tax, direct tide, direct transmission, direct trust, foreign direct investment, joint direct attack munition, mailer, norman mailer, stage direct