Onboarding with a third-party logistics provider (3PL) can take less than a week or more than three months. The published ranges are that wide. Fulfilment.com puts it at as little as 5 days with tech-first providers and 90+ days with enterprise asset-based 3PLs. Pipe17, which sells integration software to 3PLs, says the average for a new brand client runs 8 to 12 weeks.
For a small brand with one store and one product line, much of that clock isn't software. It's how quickly your inventory reaches the warehouse and how clean it is when it gets there, and that part is largely up to you.
What the published timelines are based on
The long estimates come from big setups. Racklify's onboarding guide lists 2 to 6 weeks for a small merchant with fewer than 1,000 SKUs and 6 to 12 weeks once several sales channels have to be integrated. It names systems integration, SKU count, regulatory requirements and phased cutovers as the factors that set the pace. (A SKU, or stock-keeping unit, is the code for each distinct product or variant you sell.)
Pipe17 ties 8-to-12-week onboarding to integration work: connecting a brand's sales channels and ERP to the warehouse's systems, one custom connection at a time. A founder selling on Shopify with a few dozen products has much less of that to do, so the shorter end of these ranges is the fairer comparison.
What you need ready before day one
The 3PL can't start counting days until it has these from you:
- A SKU list with barcodes. Every product and variant needs its own SKU, and ideally a scannable barcode (UPC) on each unit. If some products have no barcode, ask the 3PL how it handles that before you ship anything.
- Access to your store. Staff or app access so the 3PL can connect your store and import products and orders.
- A plan for getting inventory there. Who packs the boxes, which carrier or freight company moves them, and how long transit takes.
- Packaging and insert preferences. Branded boxes, packing slips, thank-you cards, samples. Write them down so they're set up from the first order.
- A list of what's in your first shipment. This is called an ASN (advance shipment notice): a box-by-box list of SKUs and quantities sent before the boxes arrive, so the warehouse can check what shows up against what you said you sent.
The steps that set the clock
Connecting your store
This step is short when the 3PL already supports your store platform and marketplaces, and slow when someone has to build a custom connection. Before you sign, check that every channel you sell on is on the 3PL's supported list.
Getting inventory to the warehouse
Transit is the part of the timeline you control most directly. A local drop-off is quick. Parcel or freight across the country takes longer, and ocean freight that has to clear customs takes longer again. Book the inbound shipment as soon as you have the warehouse address and receiving instructions.
Receiving
Receiving is the warehouse unloading your boxes, counting the units, checking them against your shipment list, and putting the stock on shelves where it can be sold. Ask the 3PL for its receiving turnaround in writing. Clearly labelled cartons with one SKU per box go faster than mixed boxes.
First orders
Once stock is received and shows as available in your store, orders start flowing to the warehouse. Find out the 3PL's daily cutoff time, because orders placed after it wait for the next shipping day. Place one real order to yourself before you stop packing at home, and check the box, the packing slip and the tracking.
What slows onboarding down
Any of these can add time:
- Cartons that arrive without labels, or with several products mixed in one box
- Products that have no SKU or barcode, so each unit has to be identified by hand
- Freight held up in customs or delayed by the carrier
- A previous 3PL that is slow to release or ship your stock
- Several sales channels that each need their own connection
- Bundles or kits that need assembly instructions before they can ship
Leaving the garage or another 3PL
If you're packing orders yourself today, keep a small buffer of stock at home until your first shipment is received and live at the warehouse. That way you can keep shipping during the handover, and you only stop packing at home once your store shows warehouse inventory as available.
If you're leaving another 3PL, ask your current provider how much notice it needs to release your inventory and how it will ship it out. Moving part of your stock first lets the new warehouse start shipping while the rest is in transit. Avoid changing over in the weeks right before a big sale if you can; our peak-season fulfillment guide covers planning around Q4.
Whether to switch at all, and which 3PL to pick, are separate decisions. Our guide to how to switch 3PLs covers when a move makes sense, and how to choose a 3PL covers what to compare.
How onboarding works at Simpl
Onboarding at Simpl takes 5–7 days, and there's no onboarding fee. Simpl connects natively with Shopify, Shopify Plus, BigCommerce, WooCommerce and Squarespace, and also integrates with the Amazon, Walmart, eBay, Etsy and TikTok Shop marketplaces; the full list is on the integrations page.
Once your inventory arrives, receiving takes 1–3 days. After that, orders received before 12pm CT ship the same day. Every client gets a dedicated account manager, a real person you reach by email, with same-day (often faster) responses. You can see the rest of the process on how we work.
Pricing starts at $7/order. There's a $750 monthly minimum, billed pay-the-difference: if a month's order billing comes in under $750, you pay only the gap. That's about 100 shipments a month at the lightest weight (0.5 lb or under); heavier shipments cost more each, so fewer of them reach $750. Full rates are on the pricing page.
If that fits your brand, tell us about your store and products to get started.