mail‧ing /ˈmeɪlɪŋ/
noun1. [countable] something that is sent to people by post, especially to advertise something:
A catalogue and order form are included with this mailing. A mailing had gone out to every school in the country.2. [uncountable and countable] the process of sending something to people by post:
A very effective mailing of product samples was carried out last year. mailing costs [TahlilGaran] Dictionary of Contemporary English ▲