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USPS Pub 199: Implementation Guide to Intelligent Mail Package Barcode (IMpb)

The Implementation Guide to Intelligent Mail Package Barcode (IMpb) for Confirmation Services and Electronic Verification System (eVS) Mailers provides technical guidance for the implementation of the Intelligent Mail package barcode (IMpb) and file formats. These rules enable customers to meet IMpb requirements for packages and shipments with Extra Services … (click to read more)