CastleGate Integration FAQs: forward-position inventory without losing sight of it

CastleGate is Wayfair's own fulfillment network: suppliers send inventory into CastleGate facilities, and Wayfair ships customer orders from that forward-positioned stock. The point is delivery speed — faster promises on product pages tend to win the sale in home goods — in exchange for storage and fulfillment under Wayfair's program terms.

The InfiPlex CastleGate integration connects your CastleGate participation to the InfiPlex Inventory & Order Management System: qualifying orders route to CastleGate for fulfillment, shipment confirmations and stock levels flow back, and CastleGate inventory reconciles inside your master pool alongside your own warehouses and 3PLs. In short, it makes Wayfair's network behave like one more location in your operation.

Yes — CastleGate enrollment, storage terms, and fees are arranged directly with Wayfair as part of your supplier relationship. Once your program participation is active, InfiPlex connects it during onboarding; program specifics are Wayfair's to set, and the OMS works with whatever your agreement covers.

Setup is quick and simple: our USA-based team links the connection through your Wayfair supplier account during onboarding, models CastleGate as a fulfillment location in your OMS, and configures the routing rules with you. There's nothing to install and no developer needed.

Once your CastleGate enrollment is active with Wayfair, the InfiPlex side typically completes within the standard 1–3 business day onboarding window — your OMS site is provisioned in 1–2 business days and the location modeling and routing rules follow quickly after.

You set the rules — by SKU, by stock location, or by channel — and InfiPlex routes qualifying orders to CastleGate for fulfillment automatically. Everything else follows your normal paths: your own warehouse, a 3PL, or dropship shipment against a Wayfair PO.

Yes — shipment confirmations from CastleGate fulfillment flow back through InfiPlex, so the originating channel gets its tracking and your OMS record stays complete. You keep one operational picture even though Wayfair's network did the shipping.

Wayfair positions CastleGate as an omnichannel fulfillment offering, and where your program terms support it, InfiPlex can route orders from your other connected channels to CastleGate the same way it routes them to any 3PL. Channel eligibility and terms are set by Wayfair, so confirm your program's current coverage — the OMS routing is ready either way.

Yes — that's the standard pattern: fast movers forward-positioned in CastleGate for delivery speed, the long tail fulfilled from your own dock or a connected 3PL. Routing rules decide per order, and every location draws down the same master pool.

The OMS keeps routing orders to CastleGate while stock lasts there, then falls over to your other locations by rule instead of failing orders. Because inventory reconciles in real time across locations, a spike drains your pool visibly rather than surprising you channel by channel.

Wayfair does — outbound carrier selection and delivery for CastleGate-fulfilled orders happen inside Wayfair's network under the program's terms. Your carrier decisions in InfiPlex apply to everything you ship yourself: dropship POs, other marketplaces, and your webstore, across 100+ supported carriers.

CastleGate is modeled as a location in your OMS, and its stock levels flow into your master inventory pool alongside your own warehouses and 3PLs. Sales from any channel decrement the pool in real time, so what Wayfair holds and what you hold always reconcile in one view.

Yes — exactly that. InfiPlex supports multiple warehouse locations, and CastleGate slots in as one of them, with its own quantities, its own routing rules, and its own place in your reporting.

Inbound scheduling and receiving follow Wayfair's CastleGate program process, and InfiPlex gives you the operational picture around it: what's committed to CastleGate, what's still in your building, and how the pool shifts as receipts land. Our team configures the inbound workflow visibility with you during onboarding.

Yes — per-channel buffers apply regardless of which location fulfills, so you can hold back safety stock on any channel while CastleGate handles the shipping. Buffers and location routing are independent levers, which is what makes mixed strategies manageable.

Because CastleGate quantities live in your master pool, you watch them the same way you watch any location — low-stock visibility across locations is exactly the problem the OMS exists to solve. Replenishment cadence itself is your call under Wayfair's program terms; InfiPlex makes sure the numbers you're deciding from are current.

Delivery speed sells on Wayfair — faster promises on the product page convert better, especially for furniture where shipping anxiety is real. CastleGate buys that speed for your best sellers; dropship keeps the long tail capital-light. InfiPlex is what lets you run both without splitting your inventory truth.

A 3PL is channel-agnostic and fully under your carrier control; CastleGate is optimized for Wayfair's marketplace and delivery promise, with terms set by Wayfair. Most suppliers treat it as a portfolio question rather than either/or — and since InfiPlex models both as locations with rules-based routing, you can rebalance between them as the data comes in.

Yes — each network is modeled as a fulfillment location in InfiPlex, so FBA serves Amazon, WFS serves Walmart, CastleGate serves Wayfair, and your own warehouse or 3PL covers the rest. One master pool reconciles all of it, which is the only sane way to run three fulfillment networks at once.

Usually not on day one — the common path is launching dropship (no inventory commitment), letting sales data reveal the fast movers, then forward-positioning those winners in CastleGate. The Wayfair FAQ hub covers the dropship side; InfiPlex supports the graduation without re-platforming anything.

CastleGate-fulfilled orders put delivery execution in Wayfair's hands, which generally supports the speed metrics the marketplace rewards — while your dropship POs still ride on your own tracking speed and stock accuracy, both of which InfiPlex automates. The combined effect is a steadier operational record across your whole Wayfair catalog.

Yes — the 3PL Connector program gives each client their own Site Area with their own channel and location mix, CastleGate included where the client participates. It's a clean way to offer Wayfair-optimized fulfillment strategy as a service.

CastleGate connects as a standard integration on every InfiPlex plan: Basic Starter at $49.99/month (up to 2,000 SKUs, $0.50 per order), Growth Starter at $499.99/month (10,000 SKUs, 1,000 orders included, $0.10 after), and Growth Pro at $999.99/month (100,000 SKUs, 10,000 orders included, $0.05 after). Full details are on the Pricing page.

No — CastleGate storage and fulfillment fees are set and billed by Wayfair under your program agreement. InfiPlex charges only your plan and per-order pricing; the integration itself carries no separate fee.

Suppliers deep enough into Wayfair to forward-position inventory usually sit comfortably in Growth Starter, where the included order block and Repricer earn their keep; larger catalogs and ERP-connected operations belong on Growth Pro. Basic Starter works fine for a focused catalog testing the strategy — schedule a demo and we'll scope it.

Growth packages carry a 3-month minimum commitment and Partner packages a 12-month term; Basic Starter is month-to-month. Given CastleGate itself is a forward commitment of inventory, most suppliers find the OMS visibility pays for itself in avoided stranded-stock surprises alone.