Understanding Address Quality Management
Address Hygiene and Data Quality
This hub brings together GrayHair’s address quality management thinking, from foundational concepts and USPS tools to edge cases, business risk, and hands‑on training.
The content reflects real‑world thinking, based on decades of working with USPS standards, address data, and production mailing environments.
One principle guides everything here: Nothing is 100%.
Address quality is about managing probabilities, tradeoffs, and risk — not chasing perfection.
Featured Series: Ask Adam
Your Address Quality Questions, Answered
With Adam Collinson, Director of Address Intelligence, GrayHair Software
Concepts & Principles
Foundational ideas, models, and mental frameworks. Examples: accuracy vs. precision, why nothing is 100%, address characteristics.
When It Comes To Address Quality
a song “When it comes to address quality” - a new song written by Adam CollinsonPrepare yourself for a journey into the thrilling world of address quality, set to a surprisingly catchy tune! Adam Collinson, a man clearly unafraid to tackle the most riveting of...
Defining the “Perfect” Mailing Address
Defining the "Perfect" Mailing Address A well-designed address database is the bedrock of address quality.What exactly constitutes a “perfect” address? It might seem like a simple question, but the answer is more nuanced than you might think. The concept of a...
Designing Address Databases for Maximum Efficiency
A well-designed address database is crucial for maintaining address quality, streamlining operations, and reducing costs. This article explores the key elements of address database design, optimization strategies, and maintenance practices that contribute to maximum...
USPS Tools & Standards
Explains technical postal tools, services, and data sources (ACS™, NCOALink®, IMb™, etc.).
Understanding ACS™ – The USPS’s Powerful Tool for Address Quality and Cost Savings
Loading the Elevenlabs Text to Speech AudioNative Player... Undeliverable As Addressed (UAA) mail poses a significant financial burden, costing the USPS an estimated $1.39 billion annually and businesses over $20 billion. Beyond direct mailing costs, UAA impacts...
Edge Cases & Advanced Challenges
Real-world complexities, exceptions, and scenarios where postal logic breaks.
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Business Risk & Cost
Explores the impact of UAA mail, operational risks, and cost structures.
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Webinars & Resources
Links to recorded sessions, CIPCC webinars, and expert videos.
Undeliverable is Unacceptable: Legal restraints do not forbid proactivity in postal operations
Legal restraint is the idea of, “Hey, I am in a company that has industry-specific regulations that don’t allow me to change the address without confirmation from the client. So, how do I move on?” Legal restraint. That’s something we hear from companies a lot. They...
Undeliverable is Unacceptable: Why you should be using ACS™
You need to monitor for when things change. Often, things are out of your control as the post office changes – infrastructure, address types, regulations. One of the best sources for monitoring data, that’s not used nearly enough, is ACS™. ACS™ is a USPS service. When...
Undeliverable is Unacceptable: Flexibility is key in postal operations
You need to be flexible to have multiple, different best practice processes for your different operations. One size does not fit all. And you need to have the expectation of continues improvement and re-evaluations. If you did an evaluation 2 or 3 years ago, you may...
Training Courses
For information about GrayHair’s Address Quality Management training courses, get in touch today.
About Adam
Adam is one of the postal industry’s leading experts on all aspects of address hygiene and data quality services. For 20+ years, he has brought expert knowledge of how address quality management tools and processes can enhance the postal and business operations of some of the largest operations in the country.
As the industry’s “Address Quality Guru”, he is constantly involved in leading postal initiatives, associations, and work groups including being the MTAC Industry Focus Area Leader (Data, Technology, and Addressing) and AMEE Association Rep. He is also a key speaker at numerous venues such as PCC events, the National Postal Forum and Xplor.
When I entered the Address Quality world over 2.5 decades ago, I was surprised to learn that over 25% of mail submitted to the USPS was undeliverable as addressed, with more than 70% of these issues related to Change of Address. Shockingly, most of this mail still got delivered thanks to the extra efforts of USPS carriers and clerks.
When the address was “close enough,” there was a high probability that the piece would still get delivered consistently. Today, relying on that method is ill-advised and no longer as reliable.
-Adam Collinson, Director of Address Intelligence, GrayHair Software











