Return to Sender: The Address Problem That’s Costing Agencies More Than They Know

By Mike McCaman, Clarity Solutions Group

There are boxes in the back of most human services offices — not one or two, but dozens, sometimes hundreds. Whether benefits are run by a state agency directly or by counties administering them on the state’s behalf, the picture is the same.

They’re full of mail that came back. Renewal notices, redetermination letters, eligibility updates — all of them addressed to someone who didn’t receive them.

 

Most agencies have a rough sense of the volume.  Few have a precise number. And fewer still have a systematic process for what happens next — not because of lack of effort, but because the tools to manage it haven’t always been there.

The stakes are higher than the box suggests. Undeliverable mail has always been a problem for agencies, but the Medicaid unwinding pushed it to the top of the conversation. When pandemic-era continuous coverage ended in 2023 and states resumed eligibility checks all at once, more than 25 million people were disenrolled — and across all states with available data, 69% of them lost coverage for procedural reasons, not because they were ineligible, but because the renewal process broke down. The sheer scale made one thing impossible to ignore: a notice that never reaches someone can cost them their health coverage.

That was three years ago. The unwinding is over, but the underlying problem never went away. Addresses still go stale between renewals. Procedural terminations still happen when paperwork goes to an outdated address, or when people hit other barriers related to paperwork. A letter that doesn’t arrive is still where the breakdown starts.

That’s not an abstraction. That’s a family losing health coverage because an address was out of date — and the systems in place weren’t designed to catch it in time.

A Problem Agencies Inherited, Not Created

Address data in government systems degrades faster than most people realize. People move. Households change. The address recorded at last year’s redetermination may already be wrong by the time the next notice goes out — and there’s often no practical way to know until the mail comes back.

This isn’t a failure of diligence. It’s a structural gap. Most eligibility systems were built to process cases, not to manage the communication lifecycle around them. The communication operation — outbound notices, delivery confirmation, returned mail, and the channels meant to follow up — was layered on top of workflows that were never designed with it in mind.

In states where benefits are administered at the county level, there’s an added wrinkle. The state often generates the notice, but the county is left to handle the mail that comes back and the client who never received it. The breakdown happens in one place and the cost is absorbed in another.

The result is that caseworkers end up absorbing work the system should be doing. Manually sorting returns. Tracking down current addresses. Following up through channels that weren’t built for this volume. It’s important work. It’s also work that pulls capacity away from the clients who need it most.

What the Data Doesn’t Capture

The 69% procedural termination figure is striking on its own. What it doesn’t capture is the downstream cost — the reinstatements, the appeals, the follow-up casework, the client confusion — that flows from a single undeliverable notice.

Every returned letter that triggers a case closure generates more work, not less. The caseworker who has to track down a current address and reopen a case is doing work that the original outreach failure created. Multiply that across hundreds or thousands of cases and it becomes one of the more significant hidden costs in human services operations — one that rarely shows up on a budget line but is felt every day on the floor.

What Better Looks Like — And What It Requires

The goal isn’t zero returned mail. That’s not realistic. The goal is knowing, in real time, what’s being delivered and what isn’t — and having a process that responds before a case is affected.

That means validating addresses before notices go out, not after they come back. It means delivery tracking that surfaces non-delivery automatically rather than waiting for a physical return. It means alternate outreach — a text, an email, a phone call — triggered by the system the moment a piece of mail fails, not by a staff member working through a backlog weeks later.

The point isn’t to choose between mail and digital. It’s to treat them as one connected system. Print, email, text, and phone working from the same address data and the same case record, each able to pick up when another falls short, with every attempt visible in one place. That’s what turns scattered outreach into something an agency can actually manage and measure.

This isn’t about replacing what agencies are already doing. It’s about giving the people doing that work the tools to do it at the scale the work now demands — and that scale is climbing fast. Six-month Medicaid redeterminations for the expansion population take effect at the end of 2026, and new community engagement requirements arrive on the same timeline. SNAP’s work requirements have already expanded to a much larger group, now reaching adults up to age 64, more parents, veterans, and others who were previously exempt. Each change means more notices, sent more often, to more people — and federal rules require many of them to go out by mail and through at least one additional channel.

The financial stakes have risen too. Under the new SNAP rules, states with payment error rates above 6 percent have to cover between 5 and 15 percent of their benefit costs themselves — a penalty that runs into the hundreds of millions for larger states, and one that some may push down to the county level. Payment errors aren’t caused by undeliverable mail alone, but the churn that bad addresses create — missed notices, dropped cases, reinstatements, rework — is exactly the kind of strain that drives error rates up. The cost of getting communication wrong used to be measured mostly in staff time and lost coverage. Now it shows up on the budget.

Going Digital Doesn’t Mean the Mail Stops

There’s real pressure right now to move communication online — to lean on email, text, and AI-driven outreach, and to shrink the paper footprint. Much of that pressure is healthy. Digital channels are faster and cheaper, and they’re often where clients would prefer to hear from you. Cutting unnecessary print is a legitimate goal, and agencies should pursue it.

But physical mail isn’t going away, and planning as if it will creates its own risk. Some notices are legally required to be mailed. Many of the people agencies most need to reach — older adults, people without reliable internet, people in the middle of a move — are reachable only on paper. And even a digital-first strategy still rests on having a correct address on file, because that address anchors identity verification, household matching, and the fallback for when an email bounces or a text goes unanswered.

The honest position is that the two depend on each other. The agencies getting the most out of digital are usually the ones who also made their physical mail smarter — validating addresses up front, tracking what actually gets delivered, and reserving print for the moments it genuinely matters. Less paper, used better, costs less and reaches more people than more paper sent blindly. Reducing the paper footprint and improving physical communication aren’t competing goals. Done right, they’re the same project.

Start With What You Know

If you’re not sure how your agency’s address data holds up, there’s a simple way to find out.

Run a sample of your mailing list through our full address validation stack and see exactly what’s being missed — undeliverable addresses, unreported moves, outdated records, formatting issues — before any contract conversation.

It’s a free assessment. And for most agencies, the results are clarifying.