In a January 25, 2019 United States Postal Service® Industry Alert,  the USPS® announced that the Intelligent Mail® Package Barcode (IMpb) ACS™ Technical Guide is now updated to reflect the new Small Parcel Forwarding Fee for Marketing Mail Parcels and Parcel Select Lightweight Parcels. Effective January 27, 2019, this service was made available to customers by enrolling in IMpb ACS™. You can find the updated guide here.

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