3dcart Order Fulfillment for Shift4Shop Brands
We pick, pack, and ship your 3dcart orders same-day — same store, same SKUs, whether you're still on the original platform or the renamed Shift4Shop. Starting at $7/order.
Yes, Simpl ships 3dcart orders.
3dcart was renamed Shift4Shop in 2020, but most operators still call it 3dcart. Either way, Simpl connects to your store through the platform's public API — no marketplace app required, no migration. If you're running orders through 3dcart or Shift4Shop today, you don't have to change a thing on your end.
How the 3dcart integration works
Connect your store
Drop your Shift4Shop API key into Simpl. Takes about ten minutes, and you only do it once.
Map your SKUs
We pull your product catalog from 3dcart, confirm each SKU against the units arriving at our FC, and lock the SKU-to-bin mapping before any orders ship.
Orders flow in
Every paid 3dcart or Shift4Shop order webhooks into Simpl and becomes a pick task automatically. Orders received before 12pm CST ship the same day.
Tracking and inventory sync back
Carrier tracking writes back to the order the moment we print the label. Inventory deltas push to your storefront after every pick, so what's live on 3dcart matches what's on the shelf.
What syncs between 3dcart and Simpl
Every order, inventory level, and return — with the direction and mechanism for each data flow.
| Direction | What syncs | Mechanism | Notes |
|---|---|---|---|
| in | Orders | Real-time webhook on every paid order | |
| out | Inventory | Per-pick delta | Stock levels stay current. |
| out | Tracking | On label print | Carrier, service, and tracking number written back. |
| in | Returns / RMA | Triggered when an RMA is created in your store | |
| in | Product catalog | On add or edit | New SKUs and pack changes propagate without a re-sync. |
What's different about doing 3dcart on Simpl
Starting at $7/order, flat-rate
Picks, pack, postage, and packaging are included. No per-pick or per-box add-on line items stacked on top.
Same-day cutoff at 12pm CST
Paid orders that come in before noon Austin time ship the same day.
A named account manager for every client
Every Simpl client gets an account manager who knows them by name and works directly with them — reachable by email, with same-day (often faster) responses.
Why 3dcart sellers choose Simpl
No platform politics.
We work with Shift4Shop's public API directly. You don't have to wait on marketplace app approvals or migrate off the platform to use a real 3PL.
Built for D2C, sized for growth.
Simpl clients ship anywhere from 50 to 5,000+ orders a month. Same starting price per order either way.
Same person, every time.
Your account manager doesn't rotate. The person who onboards your 3dcart store is the one who picks up your email two months later.
A full service catalog.
Beyond order pick-and-pack: kitting and assembly, B2B wholesale, returns management, Amazon FBA prep, subscription boxes, and crowdfunding fulfillment. All in-house.
Transparent pricing, no peak storage clock.
Fulfillment starts at $7/order, flat-rate — picks, pack, postage, and packaging included. No setup fee.