post·mark
ˈpōs(t)-ˌmärk 
: an official postal marking on a piece of mail
specifically
: a mark showing the post office and date of mailing
Examples of postmark in a Sentence
Verb
The package was postmarked 13 February.
Recent Examples on the Web
Jake Sheridan, Chicago Tribune, 4 Feb. 2026
This means that the postmark date won’t necessarily match the date when the mail was dropped off at a retail location or collected by a letter carrier, USPS officials said.
—Rashad Alexander, Kansas City Star, 22 Jan. 2026
Los Angeles Times, 11 Feb. 2026
About 15 states accept ballots after Election Day as long as they are postmarked on or before Election Day, so the new USPS postmark procedures matter in those states.
—Hope Karnopp, jsonline.com, 8 Feb. 2026
See All Example Sentences for postmark
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Noun
While postmarks in the past were typically applied on the day an item was mailed, they are now listed as the day an item was processed at a USPS facility.
—Jake Sheridan, Chicago Tribune, 4 Feb. 2026
This means that the postmark date won’t necessarily match the date when the mail was dropped off at a retail location or collected by a letter carrier, USPS officials said.
—Rashad Alexander, Kansas City Star, 22 Jan. 2026
Verb
The state allows those ballots to arrive and be counted up to seven days after the election, so long as they are postmarked on or before election day.
—Los Angeles Times, 11 Feb. 2026
About 15 states accept ballots after Election Day as long as they are postmarked on or before Election Day, so the new USPS postmark procedures matter in those states.
—Hope Karnopp, jsonline.com, 8 Feb. 2026
See All Example Sentences for postmark
Cite this Entry
“Postmark.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/postmark. Accessed 15 Feb. 2026.
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