The USPS released Publication 199 to provide technical guidance for the implementation of the Intelligent Mail package barcode (IMpb) and file formats for Confirmation [...]
This guide provides information about the United States Postal Service (USPS) Informed Visibility Mail Tracking & Reporting (IV-MTR) application, which allows mailers to [...]
This updated guide provides information about the United States Postal Service (USPS) Informed Visibility Mail Tracking & Reporting (IV-MTR) application, which allows [...]