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3. by return mail and by return post

by return mail and by return post

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by return mail and by return post

by a subsequent mailing (back to the sender). (A phrase indicating that an answer is expected very soon, by mail.) Since this bill is overdue, would you kindly send us your check by return mail? I answered your request by return post over a year ago. Please check your records.

See also: and, mail, post, return