A great way to think about this is to adapt the checklist Kunle Campbell shares on the 2X eCommerce Podcast for vetting a 3PL and turn it into a recurring performance scorecard. This framework goes beyond just your stated SLAs and forces you to look at the entire partnership. It's about systematically auditing their performance not just on what's promised, but on how the work actually gets done.
The first step is auditing the technology and data. Kunle makes the point that your 3PL should seamlessly integrate with your ecommerce platform to ensure real time visibility of inventory, order status, and shipping information. On a regular basis, you need to spot-check this. Is the inventory count in your Shopify or BigCommerce admin consistently matching what the 3PL reports in their warehouse management system? Are there lags or sync errors? If this data is wrong, everything else downstream, from customer communication to reordering, will be wrong too.
Next, you audit the core operational SLAs. This is what most people think of: dock-to-stock time (how long it takes them to receive and process inbound inventory), order accuracy, and on-time shipment percentages. Don't just trust their dashboard. Pull a random sample of orders from the last month. For each one, track its journey from the moment the order was placed to the time it shipped. Did it go out within the 24-hour window promised in your SLA? Was the correct item packed? Tyler "Sully" Sullivan of BombTech Golf gives a great tip on Honest Ecommerce about asking 3PLs to audit your shipping data, and you can do this yourself with your current partner. Are they using the most cost-effective shipping methods as promised? Auditing this reveals the truth behind their reported numbers.
Third, and maybe most importantly, you need to audit how they handle problems. Jay Sauceda, founder of a 3PL, says on Ecommerce Conversations that he's really in the 'exceptions management business.' This is a critical insight. Your audit isn't complete without reviewing how your 3PL manages the inevitable exceptions: a lost package, a damaged item, an unexpected stockout. Look at your support ticket history with them. How quickly and clearly did they communicate when something went wrong? How effectively was it resolved? Dave Gulas emphasizes on The eCom Ops Podcast that communication and a sense of shared ownership are key indicators of a strong partnership. This part of the audit shows you how they perform under pressure, which is often more telling than when things are running smoothly.
Finally, conduct a thorough invoice audit. Kunle Campbell specifically warns about hidden fees that can destroy your margins. Go through your recent invoices line by line and compare them to the rate card and terms in your contract. Are you being charged for things you don't expect? Are the receiving, storage, pick-and-pack, and shipping charges all correct? This is where you find out if they are a transparent partner or one that relies on nickel-and-diming.
The one place this scorecard framework can fall short is in measuring the proactive, strategic value of your partner. An audit can confirm a 3PL is meeting their contractual obligations, but it won't tell you if they are bringing you new ideas, suggesting ways to optimize your packaging, or helping you plan for future growth. A partner can hit 100% on their SLAs but still be reactive. The audit tells you if they're doing the job, but it doesn't always capture how they're thinking about helping you grow your business next quarter and beyond.
