We found 3 dictionaries that define the word direct mails:

General (3 matching dictionaries)

1. direct mails: Merriam-Webster
2. direct mails: Collins English Dictionary
3. direct mails: Vocabulary.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 mails ▸ Usage examples for direct mails ▸ Idioms related to direct mails ▸ Wikipedia articles (New!) ▸ Words that often appear near direct mails ▸ Rhymes of direct mails ▸ Invented words related to direct mails