“Mailer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mailer. Accessed 31 Dec. 2025.

Definition of mailer noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

MAILER definition: 1. a paper advertisement sent to homes or businesses: 2. a company, person, or software program…. Learn more.

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MAILER definition: a person who mails mail or prepares material for mailing. mail. mailing. See examples of mailer used in a sentence.

A mailer is a letter advertising something or appealing for money for a particular charity. Mailers are sent out to a large number of people at once.

MAILER meaning: 1 : a person or organization that mails something; 2 : a container used for mailing something

MAILER meaning: 1. a paper advertisement sent to homes or businesses: 2. a company, person, or software program…. Learn more.

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