Dictionary of Business Terms: postmark
postmark
cancellation affixed on stamps by the U.S. Postal Service to indicate use of the postage. The date and place of mailing are usually indicated by the postmark and may be offered as evidence in a legal dispute of when and where something was mailed.
Dictionary of Marketing Terms: postmark
postmark
imprint stamped on mail delivered by the U.S. Postal Service showing when (A.M. or P.M. and the date) the mail was received by the USPS and the name of the receiving post office or sectional center facility. By monitoring the postmarks on incoming mail, direct mail marketers can identify service delays. Postmarks sometimes incorporate small advertising messages.
