Need a postmark to prove you paid a bill on time or voted by Election Day? To be sure, you need to visit the post office to request a manual local postmark, which is available at no extra charge.

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

In a relatively under-publicized move, the United States Postal Service has said that, as of Dec. 24, postmarks can no longer be considered proof of mailing on a certain date, thanks to changes in the ...

The USPS response mirrored that of the update published in the Federal Register, which said the new rule "in no way signals a change in our postmarking procedures; postmarks will continue to be ...

The USPS said a postmark reflects the date an envelope is first processed by an automated USPS sorting machine. Need to make sure a postmark reflects the day you dropped it off? Here's how. Shipping ...