NCOALink®

NCOA is a system of record for all COA requests and is used to produce the NCOALink product.  The NCOALink Product is a secure dataset of approximately 160 million permanent change-of-address (COA) records constructed from names and addresses of individuals, families, and businesses who have filed a change-of-address with the Postal Service™. Developed with secure data store technology to increase security of postal customer data and protect the privacy of this information, the NCOALink Product enables mailers to process mailing lists and update lists with new addresses prior to mailing. The NCOALink data is provided on a regular basis to companies that have been licensed by the Postal Service.

Who is NCOALink for?

First Class Mail

First Class Mail

Parcels

Parcels

Periodicals

Periodicals

Standard Mail

Standard Mail

Software Developer

Software Developer

Description

NCOA is a system of record for all COA requests and is used to produce the NCOALink product.  The NCOALink Product is a secure dataset of approximately 160 million permanent change-of-address (COA) records constructed from names and addresses of individuals, families, and businesses who have filed a change-of-address with the Postal Service™. Developed with secure data store technology to increase security of postal customer data and protect the privacy of this information, the NCOALink Product enables mailers to process mailing lists and update lists with new addresses prior to mailing. The NCOALink data is provided on a regular basis to companies that have been licensed by the Postal Service.

Benefits

  • Reduces undeliverable mail by providing the most current address information, including standardized and delivery point coded addresses, for matches made to the NCOALink file for individual, family, and business moves
  • Prevents re-mailings after address corrections are received because the address correction is applied prior to the mailing
  • Reduces mailer costs by reducing the number of undeliverable mailpieces
  • Provides faster product/service marketing through accurate mail delivery
  • Increases security of postal customer data

The NCOALink Product can be integrated into mailers’ in-house computer systems to provide services or use internally. 

Each NCOALink licensee must successfully complete the certification process prior to NCOALink processing. All licensees must use CASS Certified™ address matching software with the NCOALink process.

There are six (6) licensing categories.

  • Interface Developer
    • The NCOALink Software Developer License grants the right to develop an NCOALink interface for internal purposes and third parties.
    • Initial License Fee: $9,000.00
    • Annual License Fee: $1,880.00

  • Interface Distributor
    • The NCOALink Interface Distributor License grants Developers the right to distribute the NCOALink interface.
    • Annual License Fee: $43,000.00*

  • Full Service Provider (FSP)
    • FSPs can provide services to unrelated third parties, which must be at least 51% of their NCOALink processing, and process no more than 49% of records internally. FSPs receive 48 months of COA data on a weekly basis from the USPS via Electronic Product Fulfillment.
    • Annual License Fee: $300,000.00*

  • Limited Service Provider (LSP)
    • LSPs can both provide services to third parties and use the product internally. LSPs receive 18 months of COA data on a weekly basis from the USPS via Electronic Product Fulfillment.
    • Annual License Fee: $25,000.00*

  • End User Mailer (EUM)
    • EUMs may only use the NCOALink Product for processing internal house files. EUMs cannot process for any parent, subsidiary, affiliate or any related companies. Third party processing is prohibited. EUMs receive 18 months of COA data on a monthly basis from the USPS via Electronic Product Fulfillment.
    • Annual License Fee: $12,450.00*

  • NCOALink® MPE Solution
    • The NCOALink MPE solution is available to allow the use of NCOALink data on multiline optical character readers (MLOCR) to update and spray change-of-address information on mailpieces prior to submission to the USPS. The NCOALink MPE solution, which is similar to the FASTforward® system, can also be used on delivery point barcode sorters to identify, sort, and remove undeliverable-as-addressed (UAA) mail prior to submission to the USPS.

* The initial licensing year is prorated.

What's Next?

Once you have selected the appropriate licensing category, the next step is to complete the certification process. The process includes the completion of the following documentation:

  1. Application
  2. Confidentiality Statement
  3. Self-Certification Statement
  4. Key Personnel Listing
  5. Web Access Request Form
  6. Security Documentation

Featured Resources

Applications/ Forms
02/28/2018
Licensing and Certification Key Personnel Form for NCOALink®

This document contains the Licensing and Certification Key Personnel Form for NCOALink®.

Fact Sheets
01/25/2024
Licensing Fees

This document contains information about licensing fees for USPS® Licensed Products.

User Guides
01/11/2023
NCOALink® Reports Master File Descriptions

This document provides a master document for the USPS® NCOALink® Product Reporting Requirements.

Applications/ Forms
05/31/2018
NCOALink® Compliance Testing Form

This document contains the compliance testing form for the NCOALink® product.

User Guides
04/14/2023
NCOALink® Software Developer Performance Requirements for End User

The purpose of these performance requirements is to establish standard criteria of performance that USPS requires NCOALink Software Developers (“Developers”) to comply with.

Applications/ Forms
02/28/2018
NCOALink® Software Developer Certification Procedures

This document describes the process for a Developer to qualify for a license and certify an NCOALink software interface.

Data Files
01/05/2024
NCOALink® Statistics

This spreadsheet includes NCOALink statistics from 2007-2023 by licensee type.

Announcements
01/23/2024
Modifications to NCOALink® Licenses

This document provides information on modifications to NCOALink® licenses.

Tech Guides
03/02/2018
Advertising Technical Guide

Advertising technical guide for licensed products.

User Guides
04/13/2023
A Complete Guide to Processing PAFs

PROCESSING ACKNOWLEDGEMENT FORM (PAF) GUIDE United States Postal Service® Addressing and Geospatial Technology

User Guides
03/02/2018
Trademarks

Registration and Trademarks of USPS.

Tech Guides
04/18/2023
NCOALink® User Technical Reference Guide

This document is a technical reference guide for NCOALink®.

NCOALink® Full Service Provider Documents

Applications/ Forms
04/13/2023
Combined NCOALink® Processing Acknowledgement Form

Processing form that collects information required by each NCOALink® licensee for each of their NCOALink customers before providing service.

Fact Sheets
01/26/2016
Combined Required Text Documents (RTD)

This document contains the specified required documents for NCOALink®.

Fact Sheets
01/26/2016
Full and Limited Service Provider NCOALink® with ANKLink® Required Text Document

Required text document for Full and Limited Service providers of NCOALink and ANKLink.

Applications/ Forms
04/13/2023
Mail Processing Agent NCOALink® Processing Acknowledgement Form

This is an NCOALink® Processing Acknowledgement form for the Mail Processing Agent.

Fact Sheets
01/26/2016
Mail Processing Agent Required Text

This document provides information on the NCOALink® Full-Service Provider Mail Processing Agent Package.

Applications/ Forms
01/23/2024
NCOALink® Full Service Provider License Agreement v34 (1/22/2024)

This agreement licenses the use of the NCOALink® product to a "Full Service Licensee".

User Guides
04/14/2023
NCOALink® Full Service Provider Performance Requirements

This document provides information on NCOALink® Full-Service provider licensee performance requirements.

Applications/ Forms
02/28/2018
Service Provider Certification Procedures

This document provides NCOALink® Full and Limited Service Providers Definitions and Certification Procedures.

Fact Sheets
01/26/2016
Service Provider Required Text Document

This document is a required text document for the NCOALink® Service Provider and the mailing list owner.

Applications/ Forms
04/13/2023
Service Provider Processing Acknowledgement Form (PAF)

This document is an NCOALink® processing acknowledgement form.

NCOALink® Limited Service Provider Documents

Applications/ Forms
04/22/2008
ANKLink® Request Form

This document contains the request form for the ANKLink® product.

Applications/ Forms
04/13/2023
Combined NCOALink® Processing Acknowledgement Form

Processing form that collects information required by each NCOALink® licensee for each of their NCOALink customers before providing service.

Fact Sheets
01/26/2016
Combined Required Text Documents (RTD)

This document contains the specified required documents for NCOALink®.

Fact Sheets
01/26/2016
Full and Limited Service Provider NCOALink® with ANKLink® Required Text Document

Required text document for Full and Limited Service providers of NCOALink and ANKLink.

Applications/ Forms
02/28/2018
Service Provider Certification Procedures

This document provides NCOALink® Full and Limited Service Providers Definitions and Certification Procedures.

Applications/ Forms
03/13/2024
NCOALink® Limited Service Provider License Agreement v28 (1/22/2024)

This agreement licenses the use of the NCOALink® product to a "Limited Service Licensee".

User Guides
04/14/2023
NCOALink® Limited Service Provider Licensee Performance Requirements

The purpose of these performance requirements is to establish standard criteria of performance with which USPS® requires NCOALink® Limited Service Providers (“Licensees”) to comply.

Fact Sheets
01/26/2016
Service Provider Required Text Document

This document is a required text document for the NCOALink® Service Provider and the mailing list owner.

Applications/ Forms
04/13/2023
Service Provider Processing Acknowledgement Form (PAF)

This document is an NCOALink® processing acknowledgement form.

NCOALink® Service Providers

Contact Lists
01/31/2024
NCOALink® Full Service Provider Licensees

This document contains information about NCOALink® Full Service Provider Licensees.

Contact Lists
12/29/2023
NCOALink® Limited Service Provider Licensees

This document provides a list of service providers and contact information for NCOALink®. These providers receive 18 months of change-of-address (COA) data on a weekly basis from the USPS®. For the full 48 months of COA data refer to the NCOALink Full Service Provider Licensees.

Contact Lists
01/12/2024
MPE (Mail Processing Equipment) Service Provider Licensees

Marketing contact information for certified Mail Processing Equipment (MPE) licensees 

Contact Lists
08/10/2023
NCOALink® Certified Software Developers

This document contains contact information for NCOALink® Certified Software Developers.

Contact Lists
06/09/2023
NCOALink® Licensed Interface Distributors

This document contains contact information for NCOALink® Licensed Interface Distributors.

Contact Lists
12/29/2023
NCOALink® with ANKLink® Service Providers

This document provides a list of service providers and contact information for NCOALink® with ANKLink®. These service providers have 18 months of Change-of-address (COA) data from the USPS®. In addition, they inform mailers if a move has occurred in months 19 - 48, but do not provide the new address.

NCOALink® Mail Processing Equipment (MPE) Documents

Quick Service Guides
06/21/2012
Checklist for Mail Processing Equipment (MPE) Certification

This document contains the checklist for MPE certification approval.

Announcements
01/23/2024
Modifications to NCOALink® MPE Licenses and Supporting Documents (1/22/2024)

This document provides information on licenses and supporting documents for Mail Processing Equipment for NCOALink®.

Applications/ Forms
02/27/2018
Mail Processing Equipment (MPE) Data User Certification Procedures

This document contains NCOALink® Data User Mail Processing Equipment Certification procedures.

User Guides
04/14/2023
MPE Data User Licensee Performance Requirements

This document defines the licensee performance requirements for NCOALink® Data User Mail Processing Equipment.

User Guides
04/14/2023
MPE DEV SPR: MPE Software Developer Software and Hardware Performance Requirements

This document defines software and hardware performance requirements for NCOALink® Mail Processing Equipment.

Applications/ Forms
01/23/2024
MPE Developer License

This agreement licenses the development of software interfaces for the NCOALink® Mail Processing Equipment. 

Applications/ Forms
01/23/2024
MPE Interface Distribution License Agreement

This agreement governs the distribution of licensee's certified NCOALink® mail processing equipment software interface.

Applications/ Forms
01/23/2024
Mail Processing Equipment (MPE) Data User License Agreement

This agreement licenses the use of the NCOALink Product with Mail Processing Equipment.

Fact Sheets
01/26/2016
Mail Processing Equipment (MPE) Data User Required Text Document

This document is a required text document for NCOALink Mail Processing Equipment Service Provider data users.

Applications/ Forms
04/13/2023
Mail Processing Equipment (MPE) Processing Acknowledgement Form

The collection of information on this Processing Acknowledgement Form (PAF) is required by the Privacy Act of 1974. The United States Postal Service® (USPS®) requires that each NCOALink® Mail Processing Equipment (MPE) Service Provider Licensee has a completed NCOALink MPE PAF for each of their NCOALink MPE customers prior to providing the NCOALink MPE service.

Applications/ Forms
02/27/2018
Mail Processing Equipment (MPE) Software Interface Certification Procedures

The following material describes the process for an Applicant to qualify for a license and certify an NCOALink MPE software interface.

Applications/ Forms
02/27/2018
Mail Processing Equipment (MPE) Interface Distribution Certification Procedures

The following material describes the process for an Applicant to qualify for a license to distribute NCOALink Mail Processing Equipment (MPE) software.

User Guides
02/27/2018
Mail Processing Equipment (MPE) Interface Distribution Licensee Performance Requirements

The purpose of these performance requirements is to establish standard criteria of performance that USPS requires NCOALink Mail Processing Equipment (MPE) Software Interface Distribution Licensees to comply with.

Fact Sheets
01/26/2016
Mail Processing Equipment (MPE) Interface Distribution Required Text Document

This document is a software interface distribution required text document for NCOALink Mail Processing Equipment Licensees.

Fact Sheets
05/03/2012
Mail Processing Equipment (MPE) Processing Acknowledgement Form (PAF) Requirements

This document pertains to MPE Data Users; MPE Licensees who elect to return an electronic file to customers; and End Users processing in the WAN (cloud) environment.

NCOALink® Developer Documents

Applications/ Forms
02/28/2018
NCOALink® Software Developer Certification Procedures

This document describes the process for a Developer to qualify for a license and certify an NCOALink software interface.

Applications/ Forms
01/23/2024
NCOALink® Software Developer License Agreement v27 (1/22/2024)

This agreement licenses the development of software interfaces for the NCOALink® product.

User Guides
04/14/2023
NCOALink® Software Developer Performance Requirements for End User

The purpose of these performance requirements is to establish standard criteria of performance that USPS requires NCOALink Software Developers (“Developers”) to comply with.

User Guides
04/14/2023
NCOALink® Software Developer Performance Requirements for Service Provider

This document provides information about the NCOALink® software developer performance requirements.

NCOALink® Distributor Documents

User Guides
02/28/2018
NCOALink® Software Interface Distributor Certification Procedures

This document provides information on NCOALink® Software Interface Distribution Certification procedures.

Applications/ Forms
01/23/2024
NCOALink® Software Interface Distributor License Agreement v28 (1/22/2024)

The software agreement for NCOALink® governs the distribution of licensee's certified NCOALink® software interface.

User Guides
04/22/2019
NCOALink® Software Interface Distributor Performance Requirements

The purpose of these performance requirements is to establish standard criteria of performance that USPS® requires NCOALink Software Interface Distribution Licensees to comply with.

User Guides
01/26/2016
NCOALink® Software Interface Distributor Required Text Document

This document contains the required text for NCOALink® Software Interface Distribution.

NCOALink® End User Documents

Applications/ Forms
04/22/2008
ANKLink® Request Form

This document contains the request form for the ANKLink® product.

Applications/ Forms
02/28/2018
NCOALink® End User Certification Procedures

An End User is a licensee that uses the NCOALink® Product to update mailing lists for its own mailings.

Applications/ Forms
01/23/2024
NCOALink® End User License Agreement v28 (1/22/2024)

This agreement licenses the use of the NCOALink® product to an "End User Licensee".

User Guides
04/17/2023
NCOALink® End User Performance Requirements

The purpose of these performance requirements is to establish standard criteria of performance with which USPS® requires NCOALink® End User Licensees to comply.

Fact Sheets
04/27/2022
NCOALink® End User Monthly Electronic Product Fulfillment (EPF) Schedule

This document provides information on the NCOALink® End User Monthly Fulfillment Schedule for EPF.

NCOALink®/ANKLink® Archived Announcements

Announcements
11/22/2017
Updated EPF Monthly Fulfillment (November 20, 2017)

An Update to the NCOALink® End User EPF Monthly Fulfillment Schedule

Announcements
07/21/2017
Fact Sheets
06/24/2016
Licensing Announcement: Instructions on Submitting MPE Audit Test Decks for Grading

Reminder! All NCOALink® MPE Data User Licensees are required to return test answer files via Electronic Product Fulfillment (EPF).

Fact Sheets
05/25/2016
Licensing Announcement: Reminder on Processing NCOALink® MPE Audit Test Decks

A reminder for NCOALink® licenses to use current live ZIP+ 4 data when processing MPE audit decks.

Announcements
05/13/2016
Licensing Announcement: Updated NCOALink® MPE Performance Requirements

This document provides a licensing announcement for the updated NCOALink® MPE performance requirements.

Announcements
04/19/2016
Licensing Announcement: Zero Table Issues

Information as of April 19, 2016 concerning issues with the Zero Table for National Change of Address (NCOALink®) Mail Processing Equipment (MPE) Data Users. 

Announcements
04/15/2016
Reminder on Updated MPE Testing Requirements

This document provides updated MPE Testing Requirements.

Announcements
01/26/2016
Licensing Announcement: Issue with Downloading Both SHA-1 and SHA-256 Products on Electronic Product Fulfillment (EPF)

This announcement details an issue with downloading both the SHA‐1 and SHA‐256 versions of the products using the SOAP Web Services (ColdFusion).

Announcements
01/07/2016
Licensing Announcement: SHA-256 Products on Electronic Product Fulfillment (EPF)

To comply with the recommendations from the December 2014 Office of Inspector (OIG) audit of the NCOALink® program, the USPS® will begin the transition from SHA‐1 to SHA‐256 technology as the method for data encryption.

Announcements
11/27/2015
Licensing Announcement: NCOALink® Name Presentation

This announcement provides suggestions to assist in the presentation of names on mailing lists and mailpieces.

Announcements
11/05/2015
Licensing Announcement: Clarification to Addresses on NCOALink® PAFs

In an effort to help clarify the PO Box address issues when the physical street is not provided or not valid on the ZIP + 4® database, this announcment provide guidelines to follow.

Announcements
09/14/2015
Licensing Announcement: Addresses on NCOALink® PAFs

As a reminder, all parties signing NCOALink Processing Acknowledgement Forms (PAFs) must provide a physical street address.

Announcements
08/07/2015
Licensing Announcement: NCOALink® Onsite Reviews

In a coordinated effort that began in December 2014, the Licensing and Certification Department and United States Postal Inspection Service (USPIS) have teamed up to conduct NCOALink onsite reviews at Licensees’ site locations.

Announcements
06/02/2015
NCOALink® Pricing Letter

This announcement indicates a change in NCOALink licensing fees.

Announcements
06/02/2015
NCOALink® MPE Pricing Letter

This announcment indicates a change in NCOALink Mail Processing Equipment licensing fees.

Announcements
03/14/2014
Licensing Announcement: Reminder on Electronic Product Fulfillment (EPF) Server Migration

As a reminder, the Electronic Product Fulfillment (EPF) website will be migrated to a new server Saturday, March 15.

Announcements
11/19/2013
Licensing Announcement: Reminder on NCOALink® Weekly Product Updates via Electronic Product Fulfillment (EPF)

This licensing announcement is a reminder that weekly product updates for NCOALink are posted each Monday.

Announcements
05/17/2013
Licensing Announcement: Reminder on Electronic Product Fulfillment (EPF) for Large Files Beta Test

This licensing announcement serves as a reminder that the EPF for Large Files beta test concludes on Saturday, June 15, 2013.

Announcements
02/25/2013
Licensing Announcement: NCOALink® Reporting Reminder

This licensing announcement covers new changes to NCOALink reporting compliance.

Announcements
02/25/2013
Licensing Announcement: NCOALink® Reporting Requirements

Effective with the March 2013 reports, the USPS® will be validating the Monthly NCOALink reports for accuracy.

Announcements
02/22/2013
Electronic Product Fulfillment (EPF) for Large Files

As an effort to provide a more efficient method for USPS® product fulfillment, the USPS is seeking beta testers for a new electronic product fulfillment service.

Announcements
01/11/2013
Licensing Announcement: NCOALink® MPE Pricing Changes Reminder

This licensing announcement serves as a reminder that the NCOALink Mail Processing Equipment (MPE) licensing fees will change on January 27, 2013.

Announcements
01/11/2013
Licensing Announcement: NCOALink® Pricing Changes Reminder

This licensing announcement serves as a reminder, effective January 27, most of the NCOALink licensing fees will change.

Announcements
12/07/2012
Licensing Announcement: NCOALink® Price Change

As a result of the USPS® Domestic and International Mailing Services Price Change, effective January 27, 2013, the NCOALink licensing fees will change.

Announcements
12/07/2012
Licensing Announcement: NCOALink® MPE Price Change

As a result of the USPS® Domestic and International Mailing Services Price Change, effective January 27, 2013, the NCOALink Mail Processing Equipment (MPE) licensing fees will change.

Announcements
09/07/2012
Licensing Announcement: NCOALink® Product Release #1044

It has been determined that delivery of NCOALink product release# 1044, that was shipped Tuesday, September 5, has been delayed.

Announcements
05/07/2012
Licensing Announcement: PAF Requirements Reminder

As a reminder, NCOALink® and FASTforward® licensees are required by their license agreements to acquire a Processing Acknowledgement Form (PAF) for each of their customers.

Announcements
04/26/2012
Licensing Announcement: Issues with NCOALink® 48-Month Hash Data

The NCOALink® hash data product (release# 1025) contains the previous release’s data.

Announcements
12/21/2011
Licensing Announcement: NCOALink® Price Changes

As a result of the USPS Domestic and International Mailing Services Price Change, effective January 22, 2012, the NCOALink® licensing fees will change.

Announcements
02/01/2011
NCOALink® Pricing Changes

Effective April 17, 2011, most of the NCOALink® licensing fees will change.

Announcements
06/30/2010
Licensing Announcement: NCOALink® Release Number 930

The NCOALink® data fulfillment received this week was labeled with the incorrect release number.

Announcements
05/24/2010
Retraction Notice Regarding NCOALink® Release Number 925

The notice regarding NCOALink® release number 925, which was originally sent on Thursday, May 20, has been retracted.

Announcements
05/20/2010
NCOALink® Release Number 925

Regarding NCOALink® release number 925, there will be no additional moves out of ZIP™ codes that begin with ‘00’ and ‘33.’ This release is scheduled to be mailed the week of May 24.

Release Notes
01/04/2010
Licensing Announcement: Loading NCOALink® Updates

Effective immediately, current data updates to the NCOALink® Product shall be installed no later than five (5) business days after receipt.

Release Notes
11/20/2009
FASTforward®/LPE and NCOALink® MPE Annual Audit

Recently FASTforward®/LPE and NCOALink® MPE Data User Licensees were notified that MASS™ Cycle N has been deferred until August 1, 2011 and their MASS certification is valid through July 31, 2011.

Announcements
11/06/2009
NCOALink® Data Release #897

The NCOALink® data contained in data release #897 will include fewer records due to the expired records rolling off of the database.

Release Notes
05/04/2009
NCOALink® Enhancement Advisement

In the continuing effort to provide greater value and product improvement, the US Postal Service® is pleased to announce the enhancement of the NCOALink® product with the inclusion of approximately two million additional change-of-address records.

Release Notes
12/19/2008
NCOALink® Foreign Processing

The NCOALink® Full (section 4.4) and Limited Service (section 4.3) Provider License Agreements state the following: “Licensee agrees that it violates this Agreement to provide Services to an Entity located or operating outside of the Territory or using the Updated Mailing Lists outside of the Territory.”

Release Notes
11/21/2008
Reporting Compliance: NCOALink® Monthly Reports (November 21, 2008)

Sections 9.6 (Full Service Provider), 8.6 (Limited Service Provider), 8.1 (End User Mailer) and 11.4 (MPE Provider) of the NCOALink® Licensee Performance Requirements state that the monthly reports are due by the 7th calendar day of the month.

Release Notes
11/07/2008
Service Provider PAF and RTD

The NCOALink® Processing Acknowledgement Form has been updated to reflect the addition of the alternate PAF method.

Release Notes
02/15/2008
Licensing Announcement: USPS® NCOALink® Full and Limited Service Licensees

This document contains announcements concerning NCOALink® product fulfillment for the week of February 18, product fulfillment schedule changes, and usage of current NCOALink PAFs.

Related Products

OneCode ACS®

OneCode ACS allows customers mailing First-Class Mail®, Standard Mail®, and Periodical flats or letters to receive electronic or automated address corrections using the Intelligent Mail® barcode.

Traditional ACS™

Traditional ACS is one of the four ways to participate in ACS, where mailers receive notifications of undeliverable mail (UAA) and change-of-address (COA) electronically. The Intelligent Mail® barcode is not required to receive Traditional ACS.

ANKLink®

The ANKLink® Product is an enhancement to the existing 18-month NCOALink® Product. It allows mailers to make informed decisions regarding a specific customer.

DPV®

The DPV® Product identifies whether a ZIP + 4® coded address is currently represented in the USPS® delivery file as a known address record. It also allows users to confirm known USPS addresses, as well as, identify potential addressing issues that may hinder delivery.

LACSLink®

The LACSLink® product offers an automated method of obtaining new addresses after a 911 emergency system has been implemented.

DSF2®

DSF is an approved method outlined in the Domestic Mail Manual for sequencing mail pieces in walk-sequence when not using a simplified address.

Contact

For more information on NCOALink, contact us at 800-589-5766 or ncoalink@usps.gov.