Prior to December 24, if you dropped off a letter with a stamp at the post office it would usually be postmarked within a day ...

For decades, we've relied on the "postmark" to prove we paid a bill or mailed a ballot on time, but now, the rules are ...

Changes to how the U.S. mail is stamped are quietly rewriting the rules for anyone who relies on a postmark to prove they met ...

The U.S. Postal Service's new postmark process could lead to late fees and penalties when mailing time-sensitive documents.

Nothing kills the buzz of a big win faster than a “Verification Required” email. You shouldn’t have to send a selfie just to ...