Nautilus feeds picked orders into ShipStation for label generation and carrier selection. Tracking numbers flow back into Nautilus and onward to the sales channel, so customers get notifications without anyone touching the order again.
Inventory data, where you need it.
Three things the ShipStation integration does well, that you'd otherwise be doing by hand.
Auto-label on pick complete
When a pick is marked complete in Nautilus, the order auto-creates in ShipStation with the optimal carrier rate selected. Labels print to your designated printer, and the warehouse keeps moving.
Tracking sync
Tracking numbers from ShipStation push back to Nautilus and to whatever sales channel originated the order (Shopify, Amazon, BigCommerce). One write, three destinations updated.
Batch shipping
Process hundreds of labels in a batch from Nautilus pick confirmations. ShipStation's batch printing UI works as-is; Nautilus feeds the batches and tracks completion. Useful for end-of-day shipping cutoffs.
Bidirectional sync. No manual entry.
Data moves between Nautilus and ShipStation in both directions, near-real-time.
- Pick completions
- Packed weights and dimensions
- Order line items
- Customer ship-to addresses
- Tracking numbers
- Label PDFs
- Carrier service selections
- Shipment cost data
Four steps to live.
Under 10 minutes for most teams. The full health check takes longer but doesn't block sync.
Connect
Authenticate with one click. Nautilus uses OAuth — no API keys to copy, no credentials to store.
Map
Match your products, locations, and accounts. Nautilus auto-maps by SKU where possible.
Sync
Enable bidirectional sync. Changes in either system reflect in the other within 30 seconds.
Verify
Run the sync health check. Nautilus flags any mismatches before they become problems.
What the integration does, in numbers.
ShipStation questions, answered.
How does ShipStation pick the carrier and service?
ShipStation's rate shopping rules drive the choice. You configure rules in ShipStation (use FedEx Ground for orders under 10 lbs, USPS Priority for over); Nautilus passes the order details and ShipStation applies the rule. We don't override your rate shopping logic.
What about ShipStation v3 (the new API)?
ShipStation v3 is supported. The integration auto-detects which API version your account uses. v3 is faster on label requests (under 800ms typical vs. about 1.5s on v2) but the integration experience is otherwise the same.
Can I trigger label creation before pick is complete?
Yes, if you want to. By default Nautilus waits for pick completion before pushing the order to ShipStation. For warehouses that pre-print labels at the start of the day, you can switch to 'create on order arrival' mode. The tradeoff is that you'll generate labels you don't end up shipping if a pick fails.
Are international shipments fully handled?
Yes. International orders include customs forms (HS codes, country of origin, declared values) which Nautilus stores at the product level. ShipStation generates the commercial invoice automatically. For high-value shipments, we recommend manual review of the commercial invoice before label creation.
See Nautilus + ShipStation running on real data.
30-minute walkthrough with a Nautilus engineer. We'll connect a sandbox of your ShipStation account and show the sync live.