The USPS has released an updated Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Verification System [...]
The USPS has released the final version of Publication 199 Intelligent Mail® Package Barcode (IMpb) Implementation Guide. The Implementation Guide to Intelligent Mail [...]
The USPS released Publication 199 to provide technical guidance for the implementation of the Intelligent Mail package barcode (IMpb) and file formats for Confirmation [...]