One Order Management System for Every Channel and Every 3PL
If your fulfillment runs through a 3PL, InfiPlex is the layer that sits above it: pulling orders from every channel you sell on, sending the right ones to your 3PL, and keeping inventory and tracking in sync in both directions, automatically.
Built for brands shipping through a 3PL
Any channel or 3PL not on this list gets built at no additional cost on Growth plans.
Are you the 3PL, not the brand? If you run the warehouse and want to integrate your own clients' channels into your WMS, see the InfiPlex 3PL Connector instead. This page is written for the brand shipping through a 3PL, not the 3PL itself.
Sound familiar?
Outsourcing fulfillment solves the physical problem and creates a data problem. Your channels and your 3PL know different things at different times, and someone has to be the one reconciling them.
"Our 3PL doesn't know about an order until we email them."
A spreadsheet or a manual upload between your sales channels and your warehouse is a delay built into every single order.
"We update inventory in three places and it's still wrong somewhere."
Your 3PL's count, your channel's count, and your own records drift apart the moment any one of them updates without the others.
"Switching 3PLs meant rebuilding every channel connection."
When the integration lives between each channel and that one warehouse, changing warehouses means starting over on every channel.
How It Works
InfiPlex sits between your sales channels and your 3PL, so neither side has to integrate with the other directly. Four steps, and the connection outlives any single 3PL relationship.
Connect your channels
Amazon, Walmart, Shopify, Ecwid, Magento, EDI retailers, your own storefront, whatever you sell on. Orders start flowing into one queue the moment each connection is live.
Connect your 3PL, or more than one
Point InfiPlex at your 3PL's system, by API, EDI, or flat file depending on what they support. Add a second or third 3PL the same way if you split fulfillment by region, product line, or overflow capacity.
Orders route themselves
Every order lands in the queue tagged with its channel, then routes to the 3PL, or the specific warehouse within a 3PL's network, that should fulfill it. You set the rules once.
Inventory and tracking sync back
Stock counts from your 3PL flow back to every channel automatically. Once a package ships, tracking returns to the channel and the customer without anyone touching it by hand.
What If You Use More Than One 3PL?
Plenty of brands split fulfillment: one 3PL on the East Coast and one on the West, a specialist for oversized items, or a second 3PL brought on as overflow during peak season. InfiPlex treats each 3PL as a warehouse in the same routing engine that runs owned-warehouse operations, so multi-3PL isn't a special case bolted on top. It's the same system.
| Setup | How InfiPlex handles it |
|---|---|
| Single 3PL | Every order routes to the one warehouse. Simplest case, no configuration beyond the connection itself. |
| Multiple 3PLs by region or product | Routing rules send each order to the 3PL that should fulfill it, based on ship-to zip, product line, or channel, decided automatically at order time. |
| One 3PL plus an owned warehouse | Owned and outsourced fulfillment sit in the same pool. A single multi-item order can ship part from your own warehouse and part from your 3PL without manual splitting. |
| A multi-item order across 3PLs | Each line routes to wherever it's stocked. The order splits into separate fulfillments automatically, and each 3PL only ever sees the items it's shipping. |
| Adding a new 3PL later | The new warehouse gets added to the routing rules. Your channel connections don't change, because they were never built against any single 3PL to begin with. |
The full mechanics of order splitting, including exactly how a multi-item order divides across warehouses, are in the Multi-Warehouse Order Routing guide.
Inventory That Actually Agrees
The count your 3PL has, the count each channel shows, and the count you'd get if you walked the warehouse floor should all be the same number. InfiPlex keeps them that way by making the sync bidirectional rather than a one-way push.
From your 3PL, out to every channel
Stock levels reported by your 3PL update every connected channel automatically, so a sale on one channel is reflected as reduced availability everywhere else within the same sync cycle.
Buffers per channel, not one shared number
Hold stock back on channels with harsh stockout penalties and sell deeper on the rest, down to a set-to-zero threshold per SKU, so a single 3PL feed doesn't force one policy on every channel.
This is the same inventory engine covered in depth in Multichannel Inventory Sync: Stop Overselling, including where inventory can come from and whether your ERP or your 3PL stays the source of truth.
Switching 3PLs Without Rebuilding Everything
The usual cost of changing 3PLs isn't the move itself, it's rebuilding every channel connection against the new warehouse. Because InfiPlex sits between your channels and your 3PL rather than binding them together directly, the channel side never has to know which 3PL is on the other end.
What changes
- The new 3PL's connection gets configured once
- Routing rules point at the new warehouse instead of the old one
- Historical orders and inventory history stay intact
What doesn't change
- Every channel connection: Amazon, Walmart, Shopify, all of it
- Your order queue, reporting, and workflows
- Anything your customers see or experience
Connected However Your 3PL Works
3PLs vary in how they expect to receive orders and report inventory. Some run a modern API. Some still run EDI. Some export flat files on a schedule. InfiPlex connects on whichever method your 3PL actually supports, the same way it already handles EDI trading partners like Target and Walmart and API-based marketplaces like Amazon.
API
Real-time order push and inventory pull against your 3PL's own API, when they have one.
EDI
The same 850, 856, and 810 document handling InfiPlex already runs for retail EDI trading partners, applied to a 3PL that expects EDI instead of API calls.
Flat file / FTP
Scheduled file exchange for 3PLs whose systems only support batch files rather than live calls.
Already have a relationship with ShipBob, ShipMonk, Red Stag Fulfillment, DCL Logistics, or Rakuten Super Logistics? All connect. A 3PL not yet on the list gets built at no additional cost on Growth plans.
Stop being the reconciliation layer between your channels and your 3PL.
See InfiPlex routing orders to your 3PL, syncing inventory back, and doing it the same way no matter how many warehouses are involved.
Order Management for 3PL Questions
Can I use InfiPlex if I already have a 3PL?
Yes. InfiPlex connects to your existing 3PL rather than requiring you to switch. Your sales channels connect to InfiPlex, InfiPlex connects to your 3PL, and orders, inventory, and tracking flow through automatically. Most connections go live in days.
Can InfiPlex work with more than one 3PL at the same time?
Yes. Each 3PL is set up as a warehouse in InfiPlex's routing engine, the same system used for owned warehouses. Routing rules decide which 3PL fulfills each order, based on region, product, or channel, and a single multi-item order can split across more than one 3PL automatically.
Does InfiPlex replace my 3PL, or just connect to it?
InfiPlex connects to your 3PL rather than replacing it. Your 3PL keeps handling physical fulfillment; InfiPlex handles pulling orders from every sales channel, routing them to the right warehouse, and syncing inventory and tracking back, so nothing runs through spreadsheets or manual email in between.
What happens to my channel connections if I switch 3PLs?
They stay as they are. Because InfiPlex sits between your channels and your 3PL rather than connecting them directly, switching 3PLs means reconfiguring the warehouse side only. Amazon, Walmart, Shopify, and every other channel connection carries over untouched.
Does inventory update in real time from my 3PL?
Stock levels reported by your 3PL sync out to every connected channel automatically, keeping counts consistent across channels without manual updates. Per-channel buffers let you hold back stock on channels with stricter stockout penalties rather than applying one number everywhere.
Can one order ship partly from my own warehouse and partly from my 3PL?
Yes. Owned and outsourced fulfillment sit in the same inventory pool, so a multi-item order can split automatically, with some lines shipping from your warehouse and others from your 3PL, without manual intervention.
Does this work if my 3PL only supports EDI or flat files, not an API?
Yes. InfiPlex connects however your 3PL operates, whether that's a modern API, EDI documents, or scheduled flat-file exchange. The same EDI infrastructure InfiPlex runs for retail trading partners like Target and Walmart applies to a 3PL that expects EDI.
How much does this cost?
InfiPlex pricing starts at $49.99 a month and is published in full on the pricing page. There are no implementation fees on standard connections, and a 3PL or channel not yet connected gets built at no additional cost on Growth plans.
