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

The U.S. Postal Service can process 1 million packages per day at its newly upgraded Avondale facility. The massive sorting machine is part of a $40 billion investment the Postal Service is making to ...

A short silent film showing the Multi-Position Letter Sorting Machine (MPLSM). MPLSM operators used 20-key keyboards to type in two or three numbers from the ZIP code, so the machine could then sort ...

KALAMAZOO, Mich. — The United States Postal Service (USPS) is ramping up its efficiency in Kalamazoo with the installation of a new sorting machine capable of processing up to 5,000 packages per hour.

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