Change History   Version Date Reference Title Description of Change 1.2 09/18/2017 Throughout the document Changed links from RIBBS to PostalPro. 1.2 09/18/2017 ACS: An Intelligent Solution Updated the ACS telephone number to the toll-free number at 877-640-0724 (Option 1). 1.2 09/18/2017 Throughout the document Updated billing information and made other small corrections. 1.2 09/18/2017 Throughout the document Updated the document to reflect that, on January 22, 2017, Standard Mail underwent a name change and was rebranded as USPS Marketing Mail. 1.1 07/02/2013 Change History Added. 1.1 07/02/2013 Trademark Table Added. 1.1 07/02/2013 Introduction Added IMpb. 1.1 07/02/2013 Introduction Added information regarding a Fulfillment Service called SingleSource ACS, which provides all ACS transactions in the same fulfillment format and provides detailed shipping notice data files and invoice data files that will allow the customer to automate the reconciliation of fulfillment files. 1.1 07/02/2013 IMpb ACS Added. 1.1 07/02/2013 Fulfillment Files Added IMpb and SingleSource. 1.1 07/02/2013 SingleSource ACS Fulfillment Added 1.1 07/02/2013 Billing Traditional and OneCode Renamed Billing to Billing Traditional and OneCode. 1.1 07/02/2013 Billing IMpb and SingleSource Added 1.0 11/18/2011 PUB 8 Original document.