List: a way of having a group discussion by electronic mail and distributing announcements to a large number of people; each time you or any member of the list posts a reply to the conversation, it is distributed to the e-mail box of every member of the list; also called a listserve Mb represents one thousand "K" bytes, or one million bytes
the transmission of a letter; "the postmark indicates the time of mailing" mail sent by a sender at one time; "the candidate sent out three large mailings
Mailing is the activity of sending things to people through the postal service. The newsletter was printed towards the end of June in readiness for mailing The owners of the store have stepped up customer mailings