/ ˈmeɪlɪŋ; NAmE / noun
1.
[ U ] the act of sending items by mail :
The strike has delayed the mailing of tax reminders.
a mailing address
2.
( NAmE also mailer ) [ C ] a letter or package that is sent by mail, especially one that is sent to a large number of people :
An order form is included in the mailing.