return mail
Sent back letters
Return mail is mail sent back to its sender, typically because delivery failed—wrong address, recipient moved, or package refused.
Postal services stamp such items "return to sender." The phrase also describes a prompt reply: I'll respond by return mail means sending an answer back immediately, using the same postal route in reverse.
- bounceSpring back after impact
- undeliverableCannot be sent
- no such addressPostal return reason
- address unknownNo valid location recorded
- wrong addressIncorrect recipient location
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- postalstamp, stamps, postal service, letter, letters
- postal servicepost office, sorting machine, stamps, stamp, letter carriers
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- mail processingsorting machines, stamping, sorting, mailbags, sorters
- Mail Sortingsorting machines, postal codes, barcode scanning