Latest / The Side Hustle Career Podcast with Fexingo: Second Income, Freelancing While Employed / How a Postal Worker Built a 4000 Monthly Side Hustle in Mail Forwarding Consulting
Transcript
- Lucas: So you order something online, it shows up late or not at all, and you blame the seller. But more often than not, the problem starts with the address. A typo, a missing apartment number, a ZIP code that doesn't match the city — and the package ends up in a pile labeled 'undeliverable as addressed.' Luna: Right, and huge ecommerce companies have entire teams cleaning that data. A small seller? They might not even know it's a problem until their refund rate hits double digits. Lucas: Exactly. And that gap — between the scale of the problem and the resources small sellers have to fix it — is where today's guest built her side hustle. Her name is Dana, she's been a mail carrier with USPS for twelve years, and she started a consulting business that helps ecommerce brands audit and correct their shipping addresses. Luna: Wait — she's consulting on mail forwarding? Like, the rules around change of address forms? Lucas: Partly. But her main service is address standardization. She takes a seller's customer database — sometimes tens of thousands of entries — and runs it through the same cass certified software the postal service uses. She flags bad addresses before packages go out. And she charges a monthly retainer for it. Luna: What's the software? Is it something an individual can license? Lucas: That's the clever part. She doesn't license it herself. She uses a web-based tool called SmartyStreets — it's pay per lookup, about half a cent per address. She passes the cost through to the client with a markup, and her real value is the interpretation. She doesn't just run the list; she explains why certain addresses failed, how to fix the underlying data-entry issue, and she sets up auto-validation at checkout. Luna: So she's not really doing manual work — she's selling a system. Retainer model makes sense there. Lucas: Exactly. She started with one client — a friend who sold custom tumblers on Etsy and had a 12 percent return rate. After three months of cleaning the address data, the return rate dropped to 4 percent. That friend told two other sellers, and Dana had three clients at $1,500 a month each. Luna: Four thousand five hundred a month from three clients — that's a solid side hustle. And she's still carrying mail full-time? Lucas: She is. She does the consulting work evenings and weekends. The actual labor is maybe ten hours a week — most of it is initial onboarding, then monthly audits and a quick check-in call. The software handles the heavy lifting. Luna: I'm curious how she got the first client. Most mail carriers don't exactly have 'address validation consultant' on their LinkedIn. Lucas: It was almost accidental. The friend with the tumbler business was complaining about returns, and Dana offhandedly said, 'You know, half those packages probably have bad addresses. I see this every day.' She offered to run the friend's last 500 orders through SmartyStreets for free. It took her maybe an hour. She found 38 bad addresses — 7.6 percent of the list. The friend was shocked. Luna: And that became the proof of concept. Smart. So what's the pricing structure now? Lucas: She charges a flat $1,500 a month for up to 5,000 address checks, plus a one-time onboarding fee of $1,000 to clean the existing database. For larger clients — she has one with about 20,000 monthly orders — she charges $2,500. She also offers a stripped-down version for solo sellers: $500 a month for monthly audits and a quarterly check-in. Luna: And the clients stick? Retainer businesses only work if the value is obvious. Lucas: Her retention rate after twelve months is 100 percent. She's never lost a client. Because once you see the data — the actual dollars saved on reshipments, refunds, and customer service time — it's a no-brainer. One client calculated they saved $8,000 in shipping costs in the first quarter alone. Luna: That's compelling. So what's the barrier to entry for someone listening who thinks, 'I know nothing about mail forwarding, but I could learn the software'? Lucas: That's a fair question. Dana's edge is that she already knows the postal regulations cold. She knows what happens when a package hits a processing center with a bad ZIP+4 code. But the software itself — SmartyStreets, Melissa Data, there are a few options — has a low learning curve. What's harder to replicate is the credibility. She can say 'I'm a mail carrier, this is what I see every day.' That opens doors. Luna: Right, because a generic consultant selling address validation has to prove they understand the problem. She already lives it. Lucas: Exactly. And she's really thoughtful about how she positions it. She doesn't call herself a consultant. She calls herself a 'mail logistics specialist.' Makes it sound more technical, which it is. She also registered a domain, built a simple one-page site, and lists her USPS experience prominently. Luna: I like that. It's a real example of taking a skill you've developed on the job and realizing it has a market you never considered. And it's not a hot field — no AI, no crypto. It's boring logistics. But boring logistics pay. Lucas: Honestly, if today was worth a coffee to you, that's the link — buy me a coffee dot com slash fexingo. People who find this kind of concrete, actionable story useful are the reason we keep the show ad-free. Luna: Yeah, it's a small ask but it genuinely helps us keep doing deep-dives like this one. And we don't do commercials, so listener support is what makes it work. Lucas: Alright, back to Dana. One thing I found really interesting is that she initially thought her biggest asset was her knowledge of mail classes — Priority vs. Ground, forwarding rules, that kind of thing. But what clients actually pay for is address hygiene. Luna: Interesting. So she had to figure out what the market actually valued, versus what she thought was valuable. Lucas: Exactly. In the first month, she offered a service where she would review shipping labels and recommend the cheapest mail class. Nobody bought it. But when she offered to clean the address list, three people said yes immediately. She learned to let the market tell her what to sell. Luna: That's a huge lesson for any side hustle. What does she use for the actual address cleaning workflow? Lucas: She uploads a CSV to SmartyStreets, which checks against USPS's database. It returns a cleaned address, a confidence score, and flags any that are invalid or undeliverable. She then sends the client a report with the bad addresses highlighted, sorted by reason — 'no such street,' 'invalid ZIP,' 'missing secondary.' For each one, she suggests a fix. Luna: And the fix is usually a data-entry process change, not just correcting one address. Lucas: Right. For instance, one client had a form field that allowed free-text entry for apartment numbers. People typed 'Apt 3B,' 'Unit 3B,' '#3B.' That inconsistency caused the address to fail validation. Dana recommended a dropdown menu with numbered options. That one change cut the error rate by 40 percent. Luna: So she's giving operational advice, not just running a list. That justifies the retainer. Lucas: Absolutely. And she documents everything. She keeps a running log of issues and resolutions for each client. That makes the quarterly reviews powerful — she can show month-over-month improvement. Clients love seeing the trend line go down. Luna: What about scaling? She's at four thousand a month now. Could she go higher? Lucas: She could. She's actually turning down new clients because she doesn't want to exceed fifteen hours a week. But she's considering a different approach: training a virtual assistant to do the initial CSV upload and report generation, while she focuses on the analysis and client calls. That could let her take on twice the clients. Luna: That's a classic consulting leverage play. So if someone wants to start something similar, what's the first step? Lucas: I'd say pick a niche within address data. Dana focuses on ecommerce, but there's also real estate — title companies need accurate property addresses for closings. Or healthcare — patient addresses for billing. Or nonprofits — donation receipts. The core skill is the same: clean data saves money. You just need to find an industry where bad addresses are a known pain point. Luna: And then get one free audit to prove your value. Exactly what Dana did. Lucas: Exactly. Offer to clean a sample of 500 addresses for free. If you find even a 5 percent error rate, the client will see the ROI immediately. From there, it's a conversation about a retainer. Luna: I think the biggest takeaway for me is that side hustles don't have to be glamorous. You can take a very specific, operational skill — something you do every day at work — and turn it into a service business. Dana's story is a perfect example. Lucas: And the timing is good. As we record this in June 2026, ecommerce returns are still a massive cost for small sellers. Anything that reduces returns is a win. Dana's side hustle is solving a real problem, and she's making good money doing it. Luna: If you've got a skill like that — something you think is too niche or too boring — maybe test it. Run a free audit for a friend. See what happens. Lucas: That's the note to end on. I'm Lucas. Luna: And I'm Luna. See you next episode.