A technical tweak and rising shipping costs are quietly reshaping how Americans must plan mailings as 2026 approaches.

If you're mailing any time-sensitive documents, you may want to mail it earlier than usual under the agency's new postmark ...

The U.S. Postal Service (USPS) implemented new procedures for dating mail on Dec. 24, postmarking letters and packages with ...

What is new at the post office in 2026? Here's what to know about Postal Service changes in postmark process, postage stamps ...

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.

Guidelines announced on Dec. 24 allow postmarks to reflect processing date rather than mailing date, affecting 14 states with ...

The USPS updated its language about postmarks, possibly causing changes to when mail is accepted and marked ahead of deadlines. Here's what to know.