Primary definition
A postal marking made on an envelope, parcel, postcard or the like, indicating the place, date, and time that the item was delivered into the care of a postal service, or sometimes indicating where and when received or in transit.
Also known aspostal mark · mail mark · date stamp · cancellation mark
1 sources cited4 related termsReviewed Aug 10, 2026
— EAC Glossary of TermsView source
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EAC
U.S. Election Assistance Commission
A postal marking made on an envelope, parcel, postcard or the like, indicating the place, date, and time that the item was delivered into the care of a postal service, or sometimes indicating where and when received or in transit.
EAC Glossary of Terms · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Postmark. In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/postmark
Sources
1 cited · last checked Aug 10, 2026
01
EAC Glossary of Terms
EAC Glossary of Terms
Single-source
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