NPI has worked hard, collaborated with industry vendors, and took the initiative with the USPS for the allowance of move updates on flats. This has resulted in USPS regulation changes that will allow for two IMBs on a flat. With
Below is an excerpt from the Smithsonian National Postal Museum Blog, “Pushing the Envelope” where Historian and Curator Nancy Pope describes how the postal service transferred mail: America’s postal service went underground 120 years ago today. No, it wasn’t on