Postal: Lessons Learned from a Visit to the Nation’s Largest Post Office

We also got a nice overview of how the Postal Service uses those barcodes on all your catalogs. It’s no secret that those represent ZIP codes, ZIP+4 codes and delivery addresses. Robinson emphasized the importance of barcoding your mail prior to entering the USPS facility. This not only saves the Postal Service processing time, but it qualifies your mail for discounted automation rates contingent upon all other regulations being met.