Sarah Chen
Manufacturing Operations Consultant | 8 Years
Sarah specializes in production workflow optimization and inventory systems for electronics and contract manufacturers. She has helped 30+ manufacturing teams transition off spreadsheets and into modern inventory systems.
The Gap Between "Shipped" and "Recorded"
A small manufacturer ships an order. The label gets bought and printed in ShipStation. The tracking number goes out to the customer. As far as ShipStation is concerned, that order is done.
But ShipStation doesn't tell your inventory system any of that happened. It knows a package with a certain weight went to a certain address — the order record that your team, your reports, and your customer-service inbox all rely on lives somewhere else. So the update gets made by hand: someone re-keys tracking numbers back into the order system after every shipping run, or worse, nobody does, and a week of "shipped" orders sits in the system still looking open.
That's not a hypothetical annoyance. Orders that shipped but never got marked fulfilled clog up every open-orders view, make it impossible to trust a fulfillment report, and turn "did order 1042 go out?" into a question that requires logging into a second system to answer.
Why "We Support ShipStation" Usually Means Half the Job
Plenty of software lists ShipStation as an integration. Look closely and much of what that means in practice is one direction of data flow — and the direction that usually gets skipped is the one that protects your records: pulling the shipped status and tracking number back into the system that owns the order.
The reason it gets skipped is that shipping tools and inventory tools are built by different vendors solving different problems, and the handoff between them is exactly where nobody owns the outcome. ShipStation's job is to get a label bought quickly across whichever carrier makes sense. Your order system's job is to reflect reality. Neither side closes that gap for you by default.
What Nstock's ShipStation Integration Actually Does
Nstock connects to ShipStation with an API Key and Secret pair you generate in ShipStation's own settings (Settings → Account → API Settings) and paste into Nstock — the same simple credential-pair connection as WooCommerce, with no OAuth dance. Nstock verifies the pair against ShipStation before saving it, and the UI only ever shows the last 4 characters of the key.
Once connected, here's what a sync does:
- Pulls your recent ShipStation shipments into Nstock. Click Sync Shipments Now on the ShipStation Integration page and Nstock fetches the shipments created or updated since the last sync.
- Matches each shipment to its Nstock order by order number. ShipStation received that order number from whichever store or marketplace originally pushed the order into it, so the same number links the shipment back to the Nstock order it belongs to — whether that order came from Shopify, WooCommerce, Amazon, or was entered manually.
- Writes the carrier and tracking number onto the order and marks it Fulfilled. The matched order gets its shipping label's tracking number, the carrier it shipped with, and the ship date recorded, and its status flips to Fulfilled — no manual status updates after a shipping run.
Just as important is what it deliberately doesn't do. Nstock doesn't buy labels, doesn't do rate shopping, and doesn't currently push Nstock orders out to ShipStation — label purchase and carrier selection stay entirely in ShipStation, where your existing workflow already lives. Pushing orders from Nstock to ShipStation is planned for a later update. And inventory deduction isn't part of this sync either, by design: finished goods were already deducted when the order was imported and fulfilled from its original channel, so the ShipStation sync updating the same order doesn't double-deduct anything.
Where This Fits in a Multi-Channel Setup
The order-number matching is what makes this work across channels. A multi-carrier shipping tool like ShipStation typically aggregates orders from several stores — a Shopify storefront, a WooCommerce site, Amazon FBM orders — and ships them all from one queue. If those same channels are connected to Nstock, every one of those orders already exists in Nstock with the same order number ShipStation has. One ShipStation sync then closes the loop for all of them at once: every shipment finds its order, every order gets its tracking, every status reflects reality.
That's the practical difference between shipping data living in a silo and shipping data landing where the rest of the operation can see it. The person answering a "where's my order?" email looks in one place. The fulfillment report reflects what actually went out. The open-orders list contains only orders that are actually open.
What This Looks Like Day to Day
Orders accumulate in Nstock from wherever they originate. Your shipping person works through the queue in ShipStation exactly as before — same rate shopping, same carriers, same label printer. At the end of the run (or whenever it's convenient), someone clicks Sync Shipments Now in Nstock. Seconds later, every order that shipped shows its carrier, tracking number, and a Fulfilled status. Nothing about the shipping workflow changed; the re-keying step just disappeared.
Frequently Asked Questions
Does this replace ShipStation, or work alongside it?
Alongside it. Nstock isn't a shipping or label-buying tool — ShipStation still handles rate shopping, label purchase, and carrier selection. Nstock's job is making sure what ships in ShipStation is reflected on the matching Nstock order automatically.
Does this integration buy shipping labels or push orders to ShipStation?
Not currently. The integration pulls shipping data back into Nstock: it imports shipments, matches them to existing orders by order number, records the carrier and tracking number, and marks matched orders fulfilled. Pushing Nstock orders out to ShipStation is planned for a later update.
Is the sync automatic?
Syncing is on-demand today: a "Sync Shipments Now" button on the ShipStation Integration page pulls in recent shipments whenever you run it. There's no scheduled or webhook-driven sync yet.
Is this available on every plan?
ShipStation is part of the integrations add-on on Starter and Pro plans, and included at no extra cost on the Business plan (as of July 2026) — see pricing for current details.