We asked 4 eCommerce operators and strategists how they evaluate fulfillment partners. Their answers reveal a process that most brands get badly wrong—and a framework for getting it right.
So you’ve decided you need a 3PL. For a lot of growing eCommerce businesses, that’s a good idea. If you’re not sure whether it’s the right call for yours, we wrote a companion piece on when to outsource fulfillment that can help you work through that question.
But deciding that you need a 3PL and deciding which 3PL to trust with your inventory, your customers, and your reputation are two very different problems. And the second one is where most brands stumble.
Joseph Zigelboum is the founder of Brooklyn Botany, and he currently runs four beauty brands that have collectively done around $100M in revenue. He’s been through the 3PL evaluation process more times than most founders ever will, and his framing is worth starting with: “I look at 3PLs the same way I look at suppliers. It’s not about who looks best on paper, it’s about who actually performs when things go wrong.”
That last part matters more than most brands realize. The sales call always goes well. The pitch deck is always polished. Why wouldn’t they be?
It’s later that the problems come to the surface. That might mean a missed shipment during a promo. Or a returns process that doesn’t actually work. Or a pricing structure that looked clean at 500 orders and became monstrously expensive at 2,000.
Milan P Sony is a product marketing manager and growth strategist who advises eCommerce brands on operations and go-to-market strategy. He sees brands make the same mistake over and over: “I start with economics, then reliability, then fit. First, what’s my true cost per order now and at 2x scale. Then, can they actually ship accurately and on time consistently. And finally, does their setup match how the brand operates. Most people do this in reverse and that’s why they regret it.”
Economics, reliability, fit. In that order. This is a useful spine for thinking through the entire evaluation process, and it’s roughly the order we’ll follow here.
We reached out to four eCommerce professionals. Among them, you’ll find a 25-year retail veteran, a $100M brand operator, a luxury eCommerce director, and a growth strategist. We asked them how they evaluate 3PLs, what’s non-negotiable, and what due diligence most brands skip. Then we supplemented their answers with insights from the experts we interviewed for the companion piece.
Here’s what they told us.
When Choosing a 3PL, Start with Economics & Not Features
Before you look at a single 3PL website, you need to know your own numbers. Most brands enter the evaluation process by comparing the wrong things. And this is largely because they don’t know what fulfillment costs them internally.
In the companion piece, we uncovered something striking: three experts, working independently and with no relationship to one another, arrived at the same figure. James Coccaro, who specializes in scaling DTC brands from early-stage through $50M+ in revenue, put it plainly: “Most brands underestimate in-house cost by 20–40%.”
Jaime Hill, an eCommerce and digital director with over two decades of experience across brands like Monsoon, Oak Furnitureland, and Avis, landed in the same range: “Most growing DTC brands discover that their true cost for in-house fulfilment is between 20–40% higher than they first thought.”
That convergence isn’t a coincidence. It reflects a consistent pattern. Namely, brands compare a 3PL’s published rates against an incomplete picture of their own costs and conclude that outsourcing is too expensive. Then they find out when it’s a bit too late that they were never accounting for burdened labor, software, packaging waste, or the opportunity cost of the founder spending 15 hours a week on logistics instead of revenue-generating work.
Chris Parsons is the founder and author of Retail Rewired and was named a RETHINK Retail Top Retail Expert for 2026. He’s spent 25 years in retail operations at Walmart, Home Hardware, Newegg, and currently serves as VP of Partner Growth & Marketing at Hale. He describes the specific moment when the math shifts: “When a brand calculates what it truly costs them to pick, pack, ship, store inventory, and manage fulfillment internally, there is usually a point where that cost starts getting close to the minimum monthly commitment of a 3PL.”
And once you’re in that neighborhood, the decision simplifies. “At that stage the decision often comes down to a simple question,” Parsons says. “Do we hire another person and continue building internal operations, or do we move to a partner that already has the infrastructure, negotiated carrier rates, and systems in place?”
Sony’s framework adds a critical dimension that most cost comparisons miss: modeling forward. It’s not enough to know your cost per order today. You need to know what it looks like at 2x scale. If your in-house costs scale linearly (or worse, exponentially because you need more space, more hires, more software), while a 3PL’s costs scale more gradually because of volume efficiencies, then the gap between the two options widens in the 3PL’s favor as you grow.
Do the math before you do anything else. Everything that follows—evaluating capabilities, visiting warehouses, negotiating contracts—is wasted effort if the economics don’t work.
Choosing a 3PL: Non-Negotiables vs. Nice-to-Haves
Once you know your numbers, you need to know your requirements. Every expert we spoke with drew a sharp line between what’s essential in a fulfillment partner and what’s merely nice to have. The essentials are fewer than most brands think. But the trade-off is that they’re more important than most brands realize.
The Most Important Factors When Choosing a 3PL
Zigelboum doesn’t mince words: “Inventory accuracy. If this breaks, everything breaks.”
He’s right, and nobody we spoke with disagreed. If your 3PL can’t tell you exactly what’s on their shelves, then every other capability—fast shipping, clean integrations, branded packaging—is built on sand. Overselling, stockouts, and mystery shrinkage all trace back to the same root cause.
Sangita Dua is a Head of eCommerce who has held roles at Alexander McQueen, LVMH, Mulberry, and Gant. She brings a luxury and premium brand lens to the evaluation, and her non-negotiable list reflects that precision: a dedicated account manager, inventory accuracy, SLAs with clear cut-off times for next-day and peak-season deliveries, and a customer service portal to handle refunds and returns.
Sony’s list converges on similar territory: “Solid integrations, real-time inventory, high order accuracy, fast dispatch, and clean returns handling. If any of that is shaky, it’s a no.”
Across all four experts, five themes can be considered non-negotiable:
- Inventory accuracy
- Reliable shipping with clear SLAs
- Real-time visibility into inventory and orders
- Clean returns handling, and
- Direct access to someone who can make decisions
That fifth one deserves its own moment.
You Need Access to a Real Person
Zigelboum frames this as a practical test: “Can I text or email someone and get something done quickly? Stop a shipment, inspect a batch, fix an issue before it turns into a bigger problem.”
Dua lists “dedicated account manager” as a non-negotiable. It’s not a nice-to-have or a perk. It is a requirement, full stop.
The ability to reach a real person with authority when something goes wrong came up in every conversation. This isn’t a feature to evaluate on a comparison spreadsheet. It’s the difference between a partnership and a vendor relationship. And it tends to be one of the first things that erodes as a 3PL scales and starts routing you through support ticket queues instead of direct contacts.
Nice-to-Haves Are Secondary
Zigelboum puts the nice-to-haves in context: “Multiple warehouse locations. Advanced kitting or assembly. More built-out tech.” And then the line that captures the whole dynamic: “Most brands overestimate features and underestimate control and communication.”
Sony echoes this: “Nice-to-have is everything else like custom packaging, kitting, international shipping, etc. Helpful, but only after the basics are dialed in.”
Dua adds a nuance worth noting. For small brands, a localized 3PL is a nice-to-have. For growth brands with international ambitions, “they would be keen to look [at] someone with global presence.” The nice-to-have list changes with the brand’s trajectory. What doesn’t change is the priority: the fundamentals have to be airtight before you start shopping for extras.
See Also: When Should an Ecommerce Business Outsource Fulfillment? [Expert Analysis]
When Choosing a 3PL, Pick One That’s The Right Size for Your Company
Here’s the finding from our interviews that most brands won’t want to hear: the best 3PL for your business is probably not the biggest or the most well-known. It’s the one whose typical client looks like you.
Bigger 3PLs Might Not Be Better
Zigelboum is emphatic on this point: “A big part of this is stage fit. Bigger is not better. Most brands I work with are better off with a more boutique 3PL that actually cares and moves fast, not a massive operation where you’re just another account.”
He doubles down later: “In most cases, I’d rather have a smaller, highly responsive 3PL that I can rely on daily than a big name that treats the account like a number.”
Sony arrives at the same conclusion from a different angle. Instead of starting with the 3PL’s reputation, he starts with their client base: “I look at who they already work with. Similar order volume, SKU count, and channels. If you’re way smaller or way bigger than their typical client, you’ll either get ignored or outgrow them fast.”
That’s a remarkably practical heuristic. If a 3PL’s average client ships 50,000 orders a month and you ship 1,200, you’re not their priority. If their average client ships 800 and you’re at 5,000 and growing, you’ll be knocking on the walls within a year. Either mismatch creates friction that’s hard to solve after you’ve signed a contract and sent over your inventory.
Choose a 3PL That Handles Your Product Type
Zigelboum, who runs beauty brands with strict handling requirements, is specific: “SKU and operational complexity. Bundles, fragile items, liquids, all require different handling.”
Dua’s framework reveals just how much the evaluation criteria shift based on product type. For luxury and premium brands, what matters is “white glove service due to high RRP,” along with brand partners, site organisation, site cleanliness, and capacity. For growth and high-street brands, the focus shifts to SLAs, reviews, brand partners in the same or similar industry, and volume management.
The question isn’t “who is the best 3PL?” It’s “who is the best 3PL for a brand like mine?” A fulfillment partner that handles cosmetics beautifully might be entirely wrong for furniture. And a 3PL that serves fast-fashion brands at volume might not have the handling standards that a luxury brand requires.
Can Your 3PL Grow With You?
There’s a tension embedded in the boutique-vs.-large debate that’s worth sitting with. A smaller, highly responsive 3PL gives you attention and flexibility now, but might cap out at a volume that a bigger operation could absorb easily. Sony names the question directly: “Growth trajectory. Can this 3PL grow with you without forcing a move too soon?”
The right move is to understand your own growth trajectory and ask, honestly, whether the partner you’re evaluating can handle the business you plan to have in 18–24 months, rather than just the business you have today. If the answer is no, you’re setting yourself up for a disruptive migration right when you can least afford one.
How To Factor in Geography, Infrastructure, & Technology When Choosing a 3PL
Where your inventory sits matters more than most brands realize. And the technology gap between what you can build in-house and what a modern 3PL already has is wider than you might think.
Location
Zigelboum puts it simply: “Geography also matters. Where inventory sits impacts shipping cost, delivery speed, and customer experience more than people realize.”
For most DTC brands, the practical question is straightforward: is this 3PL located close enough to your core customers to offer competitive delivery times? A fulfillment center in New Jersey serves the eastern seaboard well. If 60% of your customers are in California, that’s a problem, and one that’ll show up in both your shipping costs and your delivery-time reviews.
Parsons brings a retail perspective to this that most DTC-focused brands won’t have considered: “I also encourage brands that have physical retail locations to look at the viability of shipping from store. In some cases this can help take pressure off distribution centers and get products to customers faster, especially when stores are closer to the end customer.”
That’s a narrower use case, but for brands straddling DTC and retail, it’s worth exploring.
Infrastructure
Parsons surfaces an argument for outsourcing that doesn’t get enough attention. “One signal I often see comes from attending industry conferences and seeing the level of automation and technology now going into distribution centers,” he says. “Modern fulfillment operations are investing heavily in robotics, warehouse management systems, and process automation.”
And here’s the kicker: “For many growing brands, the reality is they simply do not have the capital yet to make those kinds of investments. At the same time, strong 3PL partners are continuously improving their operations because logistics is their core business.”
This is an underappreciated argument for outsourcing. A 3PL that handles thousands of clients can invest in infrastructure—robotics, WMS platforms, process automation—that no single brand at 1,500 orders a month could justify building. You’re effectively renting access to enterprise-grade logistics infrastructure at a fraction of what it would cost to own.
Technology
Dua lists her first evaluation criterion bluntly: “Does the system integrate with [the] brand’s tech stack?” She follows that with a practical test: “How easy the integration is—plug in approach is good, makes the decision making easier.”
Sony lists “solid integrations” as non-negotiable. So does Zigelboum, who wants “clean integrations with Shopify, Amazon, and real-time visibility into inventory and orders.”
If you’re manually exporting CSVs to your 3PL, you’ve already lost. Real-time inventory sync across your sales channels isn’t a nice-to-have in 2026. It’s the baseline.
The Due Diligence Most Brands Skip When Choosing a 3PL
This is where the gap between brands that thrive with a 3PL and brands that regret the switch becomes clearest. Every expert we spoke with identified specific diligence steps that most brands skip entirely. And the pattern is striking: the skipped steps are almost always the ones that would have surfaced the problems that later became expensive.
Talk to Real Clients (and Ask the Right Questions)
Zigelboum identifies the most common gap: brands skip “not speaking to real clients and asking the right questions about where things break.”
Sony is blunter: “They don’t talk to existing clients, don’t run a proper pilot, don’t test returns, and don’t read the pricing fine print. Everyone sells well on calls. The problems only show up in operations, and by then it’s painful to switch.”
That last line is worth underlining. Everyone sells well on calls. The sales process is, by definition, optimized to make you feel confident. The diligence process exists to test whether that confidence is warranted.
Ask the 3PL for references, and then ask those references the questions they probably won’t volunteer. Not “are they good?” but “what broke, and how did they handle it?” The answer to the second question tells you more than the answer to the first.
Visit the Facility
Dua lists “site visit” as a diligence step most brands skip. Also on her list: system promptness, ease of integration, volume management during peak trade periods, and—this one is sharp—”check what 3PL don’t do well.”
Zigelboum agrees: brands skip “not doing a live walkthrough of the facility.”
A site visit tells you things no sales deck can communicate. Is the warehouse organized? Is inventory clearly labeled and accessible? Are returns stacked in a corner collecting dust, or are they being processed? Dua’s observation about checking what the 3PL doesn’t do well is especially worth heeding. Every fulfillment operation has weaknesses. The ones that acknowledge them are the ones you can work with. The ones that hide them are the ones to worry about.
Run a Pilot Before You Commit
Zigelboum identifies two more steps brands skip: “not testing with a smaller batch before fully committing” and “not modeling the true, fully loaded cost.”
A pilot doesn’t have to be complex. Send a small batch of inventory. Place test orders. Process a return. Time the whole cycle. If the pilot goes badly, you’ve lost a few hundred dollars and learned something invaluable. If you skip the pilot and onboard fully, a bad 3PL can cost you months of time and damage customer relationships that took years to build.
Meet Their Other Brand Partners
Dua includes “brand partner meeting” in her diligence checklist. Her luxury background shows here. In her world, the other brands sharing your 3PL’s warehouse space say something about the 3PL’s standards and priorities. Even outside luxury, it’s worth knowing who else they serve, not so much to benchmark, but rather to understand how they allocate attention and resources.
Read the Fine Print
Zigelboum’s standard for pricing is straightforward: “Cost structure—I want simple, transparent pricing that I can actually model as the brand scales. Not teaser rates that fall apart once volume increases.”
You need to understand the 3PL’s true costs—which means reading past the headline pick-and-pack rate to storage fees, receiving charges, returns processing, disposal, and any volume-tier changes that kick in as you scale. The pricing that looked clean at 500 orders a month might tell a very different story at 2,000.
Red Flags and Common Mistakes
Knowing what to look for is important. Knowing what to run from is at least equally important, and often more immediately actionable.
Rushing the Decision
Parsons has watched this pattern play out repeatedly: “The biggest mistake is that operations quietly become the bottleneck to growth. Brands often wait until the warehouse is overwhelmed, errors are increasing, and customer complaints are rising. At that point the transition to a 3PL becomes rushed and reactive.”
Desiree Shank, an early Shopify hire who now works at the intersection of TikTok live shopping and social commerce, reinforced this in the companion piece: “The worst scenario is panic-migrating to a 3PL during Q4 or right after a viral spike. Onboarding while drowning is never ideal.”
The pattern is consistent across both rounds of interviews. Brands that choose their 3PL under pressure make worse decisions. The best time to evaluate fulfillment partners is during a calm stretch when you can be deliberate. Not when the warehouse is on fire and Q4 is six weeks away.
Migrating Broken Processes
Coccaro flagged this in the companion piece, and it bears repeating: “They delay systems maturity. By the time they move to a 3PL, they’re migrating broken processes instead of clean ones.”
A 3PL can scale a good process. It cannot fix a bad one. If your inventory accuracy is already poor, your SKU naming is inconsistent, or your returns process doesn’t exist, those problems will follow you to the new warehouse, and they’ll be harder to diagnose from a distance.
Overpaying Without Realizing It
Parsons surfaces a cost that’s hiding in plain sight: “Brands often end up shipping a lot of air because they do not have the right mix of packaging materials or optimized box sizes for multi-item orders.”
And it gets worse: “They also tend to overpay on shipping rates because they simply do not have the volume or experience to negotiate better carrier pricing. Many growing brands do not realize how much they are overspending because they do not know what strong shipping contracts should look like.”
A good 3PL should be able to optimize this almost immediately. But you won’t know it’s a problem unless someone points it out, or unless you’ve done the cost analysis we described at the top of this piece.
Choosing on Impression Instead of Fit
Zigelboum names the biggest mistake directly: “The biggest one though is not thinking about fit at their current stage. They choose based on who looks the most impressive instead of who will actually support how they operate day to day.”
The 3PL with the best website, the most impressive client logos, and the slickest sales team might be exactly wrong for your business. Fit at your current stage—your order volume, your SKU complexity, your channel mix, your specific product handling needs—matters more than reputation.
A Final Framework for Choosing a 3PL
Four experts. Very different vantage points: a retail operations veteran, a $100M brand operator, a luxury eCommerce director, a growth strategist. Here’s what we’d distill from all of it.
Start with your own economics. Know your real cost per order—including burdened labor, overhead, software, and the opportunity cost of leadership time—before you evaluate anyone else’s pricing. If you haven’t done this, nothing else in the evaluation process will be calibrated correctly.
Separate non-negotiables from nice-to-haves. Inventory accuracy, reliable shipping with clear SLAs, real-time visibility, clean returns handling, and direct access to someone who can make decisions. Everything else is secondary until these are locked down.
Match on stage, not on size. The right 3PL is one whose typical client looks like your business in terms of volume, complexity, and channel mix. If you’re way smaller or way bigger than their average client, the fit will be off in ways that are hard to fix after onboarding.
Do the diligence other brands skip. Talk to real clients and ask where things break. Visit the facility. Run a pilot. Meet other brand partners. Read the full contract, including the fine print on storage, receiving, returns, and volume-tier pricing changes.
Don’t rush. The worst 3PL decisions happen under pressure. Give yourself a calm evaluation window, ideally months before you actually need the transition.
Parsons captures the destination that all of this diligence is meant to reach: “For growing brands, a strong 3PL is not just a logistics vendor. It becomes an operational partner that allows the company to focus on building the brand, improving the customer experience, and growing the business.”
And Zigelboum captures the principle that should guide you there: “It comes down to alignment with the brand’s current stage.”
The fulfillment decision isn’t one decision. It’s two. First,whether to outsource. Then, who to trust.
Get both right, and fulfillment stops being a bottleneck and starts being what it should be: a lever for tremendous growth. Get the second one wrong, and you’ll spend the next six months wishing you’d been more careful with the process that brought you here.
When in doubt, take your time and grind through the due diligence work. Your future customers are counting on it, even if they’ll never know your 3PL’s name.
