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
Susan Shelley, Oc Register, 17 June 2026
Renner also grilled election officials about whether or not post office officials had backdated postmarks on mail ballots sent after election day so they could still be counted, the source said.
—Kevin Rector, Los Angeles Times, 13 June 2026
Greta Cross, USA Today, 20 June 2026
More than 730 Blue Shield of California Medicare customers mistakenly received this week letters postmarked June 11 notifying them that their healthcare coverage had ended June 11, according to a Blue Shield customer service representative.
—Velvet Wu
june 19, Sacbee.com, 19 June 2026
See All Example Sentences for postmark
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Noun
This is especially true now that current law allows for absentee ballots without a postmark to be turned in up to three days after the election.
—Susan Shelley, Oc Register, 17 June 2026
Renner also grilled election officials about whether or not post office officials had backdated postmarks on mail ballots sent after election day so they could still be counted, the source said.
—Kevin Rector, Los Angeles Times, 13 June 2026
Verb
Exclusions must be postmarked no later than May 22.
—Greta Cross, USA Today, 20 June 2026
More than 730 Blue Shield of California Medicare customers mistakenly received this week letters postmarked June 11 notifying them that their healthcare coverage had ended June 11, according to a Blue Shield customer service representative.
—Velvet Wu
june 19, Sacbee.com, 19 June 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 21 Jun. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
