Spacefill synchronises Amazon orders, inventory and shipment tracking with the WMS of your logistics partners in real time, without technical integration on your side.

Orders, inventory, shipments and cancellations flow between Amazon SP-API and your 3PL's WMS within seconds — no CSV, no FTP, no missed updates.
We've pre-integrated with 40+ warehouse management systems — Manhattan, Reflex, Infolog, Generix, SAP EWM and more. Your 3PL keeps its tools, you keep your customers.
No technical work on your side. Our team handles the SP-API credentials, mapping, testing and go-live. A named project manager sees you through until the first shipment.
Spacefill pulls your orders from Amazon SP-API as soon as they are paid, enriches them with your business rules, and pushes them to the WMS of the 3PL that should fulfil them.
✅ Automatic download from Amazon NA, EU, UK and JP marketplaces
✅ Smart routing by SKU, region, stock availability or SLA
✅ Cancellations, edits and address updates propagated both ways
✅ Splits, holds and custom folders for any exception workflow

Spacefill captures carrier tracking numbers from your 3PL and pushes shipment confirmations back to Amazon in real time — protecting your seller metrics and delighting your buyers.
✅ FBM (Fulfilled by Merchant) — shipped from your own or 3PL warehouses
✅ FBA inbound — prepare and send shipments to Amazon fulfilment centres
✅ MCF — use Amazon's fleet to fulfil orders from other channels
✅ Valid Tracking Rate (VTR) and on-time delivery metrics improved out-of-the-box
Spacefill aggregates the live stock of every warehouse in your network and pushes accurate inventory feeds to Amazon — so your listings reflect reality, down to the SKU.
✅ Multi-warehouse inventory consolidated into a single feed per marketplace
✅ Safety stocks, buffers and reserve rules per channel
✅ Forecasted stock view for inbound ASNs and returns
✅ Low-stock alerts and automated replenishment triggers

Synchronise Amazon RMAs with your warehouse, receive returns, trigger refunds and update stock — all automated from a single console.
On-time delivery, cancel rate, Valid Tracking Rate, warehouse performance — live dashboards you can share with your 3PLs and stakeholders.
Route every order to the optimal warehouse based on stock, zone, SLA, cost or custom logic. Fail-over rules kick in automatically when a location is down.
Centralise every event, shipping proof and communication per order. Defend your A-to-Z claims and seller metrics with a full, timestamped audit trail.