N-UNCOUNT
邮寄;投寄
Mailing is the activity of sending things to people through the postal service.
例句
The newsletter was printed towards the end of June in readiness for mailing...
快到6月底的时候，时事通讯印刷完毕准备投寄。
The owners of the store have stepped up customer mailings.
店主们加大了对顾客的邮寄宣传力度。