Add Yahoo as a preferred source to see more of our stories on Google. A USPS postmark is an official mark that shows where and when mail was accepted by the Postal Service. It used to include the date ...

The USPS said a postmark reflects the date an envelope is first processed by an automated USPS sorting machine — not the actual drop-off date.

The Unites States Postal Service is making changes for 2026, including the postmark process — which could mean late fees and penalties for anyone mailing time-sensitive documents such as tax returns ...

Add Yahoo as a preferred source to see more of our stories on Google. Aptly-named snail mail might be getting even slower in 2026. The United States Postal Service has implemented new procedures for ...