We found 2 dictionaries that define the word direct mailing:

General (2 matching dictionaries)

1. direct mailing: Oxford Learner's Dictionaries
2. direct mailing: TheFreeDictionary.com

(Note: See direct_mail as well.)

Definitions from Wiktionary (direct mail) ▸ noun:  Synonym of advertising mail ▸ Also see direct_mail ▸ Words similar to direct mailing ▸ Usage examples for direct mailing ▸ Idioms related to direct mailing ▸ Wikipedia articles (New!) ▸ Words that often appear near direct mailing ▸ Rhymes of direct mailing ▸ Invented words related to direct mailing