CDS

The Computerized Delivery Sequence (CDS) program provides updated delivery sequence information on customer-provided address lists. Eligibility for the CDS update service is determined through the Address Sequence Service process described in the Domestic Mail Manual (DMM) 507.

Customers qualifying for CDS will benefit from the use of the CDS file through:
  • Accurate complete addresses
  • Reduced undeliverable-as-addressed mail
  • Increased deliverability
  • Access to walk sequence saturation discounts


    • CDS Links:

    ANNOUNCEMENTS & INFORMATION
  • CDS Information
  • CDS Customer Web List
  • CDS Qualification Requests (CDS Customers only - Login required)


    • GUIDES
  • CDS User Guide


    • FORMS
  • CDS Application/Renewal Form
  • CDS Web Access Request Form


    • CONVERSION SOFTWARE
  • CDS Conversion Software (Windows)
  • CDS Conversion Software User Guide (Windows)
  • CDS Conversion Software Instructions (Windows)
  • CDS Conversion Software (Linux)
  • CDS Conversion Software (Unix-Sun32)
  • CDS Conversion Software User Guide (Linux-Unix-Sun32)

    • To obtain additional information about CDS, contact the National Customer Support Center at 800-238-3150. The CDS User Guide is available online at http://ribbs.usps.gov/files/cds.

    EAS

    Electronic Address Sequencing Service (EAS) provides an electronic option for processing address files for sequencing and/or qualification for Computerized Delivery Sequence (CDS). Electronic Address Sequencing is a service provided by the NCSC in Memphis TN, to mailers who have address lists containing at least 90 percent – but not greater than 110 percent – of the total possible deliveries in a 5-digit ZIP Code. 

    EAS Links:

    ANNOUNCEMENTS & INFORMATION
  • CDS Update Advisory
  • CDS Customer Web List


    • GUIDES
  • EAS User Guide
  • EAS File Format Guide


    • FORMS
  • Delivery Unit Summary (DUS)
  • EAS Processing Acknowledgement Form (PAF)

    • To obtain additional information about EAS, contact the National Customer Support Center at 800-238-3150. The EAS User Guides is available online at http://ribbs.usps.gov/files/eas.