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Data and List Hygiene

Maintaining the quality of your marketing data yields more effective marketing campaigns and increased ROI


  • Meet USPS® requirements to qualify for postal discounts with regularly scheduled address hygiene
  • Your carrier route coded records with bar codes in place provide opportunities for deeper postal discounts
  • Processing may not only cut your postage, but may also increase your campaign response through better targeting

Data Resources

It is important to perform data and list hygiene on a regular basis. Doing so will help ensure that your data is updated and your message gets to the right person. The accuracy of physical addresses is a critical element in ensuring the effectiveness of a targeted campaign.

Addressed for Success

At AccuData, we believe that address quality is a basic requirement for both the effective management of customer or prospect databases and the effective execution of marketing campaigns. For us, the address quality process has two primary goals:

  • Establishing that mailing addresses are accurate for maximum deliverability per USPS standards, resulting in higher campaign efficiency
  • Verifying that the physical address is consistent with the person targeted by your marketing campaigns

Simply running your files through NCOALINK® (National Change of Address) processing is a start, but it isn’t enough. The addresses you work with should first be standardized to obtain the highest possible match rate. Additionally, a variety of supplementary services can help you get your messages to the right people at the right place at the right time.

Data and List Hygiene Options


NCOA provides mailers with new addresses for people that have moved in the last 48 months. This service is provided by a licensee of the United States Postal Service. NCOA provides CASS certified output, Address Standardization, Zip Correction, Zip + 4 Appending, and Carrier Route Coding. NCOA meets Move Update requirements and may prevent mailers from accruing additional mailing costs. The NCOA database is updated weekly.

CASS™ System

The CASS process features address standardization to ensure that the addresses on your mailing list meet USPS requirements. The process includes ZIP Correction, ZIP + 4 Appending, Carrier Route Coding, Delivery Point Coding, and Error Message Coding. The USPS ZIP + 4 directory is updated on a monthly basis to provide the most accurate data available.

LACSLink® System

LACS enables mailers to update their lists when addresses have been converted by local authorities or in cases where streets have been renamed or renumbered. LACS improves deliverability and enables mailers to identify potential duplicates between name and address records that have the original address and those that are already using the new converted address.


DSF (Delivery Sequence File, Second Generation) improves the delivery of mailings by validating and standardizing the incoming addresses utilizing USPS data which allows validation of individual delivery points. DSF2 processing is based on a USPS- approved matching process. Addresses are identified as business versus residential delivery points and pseudo Delivery Sequence Numbers for walk sequence postal discounts are provided. DSF2 processing attempts to correct, standardize, and verify that the addresses on a mailing list are deliverable. It also provides a Deliverability Index Report to help mailers decide whether to mail to a specific address.

Deceased Processing

Deceased processing enables mailers to identify and eliminate deceased individuals from their mailings prior to a promotion, preventing unwanted mail from being delivered to the decedent’s family. Our file contains over 40 million deceased individuals, usually resulting in identifying 1% to 3% of the file as deceased.

Prison Suppression

Our prison file is compiled from records obtained from correctional departments, probation, and parole authorities. We suppress in a single pass addresses of all Federal Prisons, State Prisons, County Correctional Facilities, and City Jails in the U.S.

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