the system whereby messages are transmitted via the post office; "the mail handles billions of items every day"; "he works for the United States mail service"; "in England they call mail `the post'"
メッセージが郵便局を通して送られるシステム
mail
a conveyance that transports the letters and packages that are conveyed by the postal system
any particular collection of letters or packages that is delivered; "your mail is on the table"; "is there any post for me?"; "she was opening her post"