That postmark on a letter or package sent through the U.S. Postal Service (USPS) no longer means what it used to.As of Dec.

For decades, a USPS postmark has served as official evidence that mail was sent on time. In elections, many state laws treat ...

Though the changes coming to the United States Postal Service in April are intended to improve efficiency and cut costs, many of the millions of customers served by the agency could also see a decline ...