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
Steve Metsch, Chicago Tribune, 2 Mar. 2026
Under the new guidelines, mail brought to a USPS store or dropped in a USPS box will not necessarily receive a postmark that same day.
—Tamia Fowlkes, jsonline.com, 9 Feb. 2026
Marley Malenfant, Austin American Statesman, 2 Mar. 2026
In Illinois, ballots for the March 17 primary election must be postmarked by Election Day and received within 14 days.
—Steve Metsch, Chicago Tribune, 2 Mar. 2026
See All Example Sentences for postmark
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Noun
Not having the postmark by the deadline would mean the ballot does not count.
—Steve Metsch, Chicago Tribune, 2 Mar. 2026
Under the new guidelines, mail brought to a USPS store or dropped in a USPS box will not necessarily receive a postmark that same day.
—Tamia Fowlkes, jsonline.com, 9 Feb. 2026
Verb
For those submitting paper returns, the IRS will consider them on time if they are correctly addressed, have sufficient postage, and are mailed and postmarked by the due date.
—Marley Malenfant, Austin American Statesman, 2 Mar. 2026
In Illinois, ballots for the March 17 primary election must be postmarked by Election Day and received within 14 days.
—Steve Metsch, Chicago Tribune, 2 Mar. 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 7 Mar. 2026.
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