Answer: postmark

AnswerCrossword Clue
POSTMARKCancellation indicator
POSTMARKPhilatelist's concern
POSTMARKEnvelope stamp
POSTMARKStamp on a letter
POSTMARKStamp stamp
POSTMARKPrepare for delivery
postmarkAn official mark stamped on a letter or other postal package, giving the place, date, and time of posting, and serving to cancel the postage stamp
postmarkto stamp mail with an official mark