Add OC3PL as a connected user
The purpose-built route. OC3PL works in the orders you delegate, without logging in as you.
ShipStation and a 3PL: How Connecting Works
They work in your orders without working as you.
ShipStation Built for This Case Specifically
ShipStation has a 3PL capability designed for exactly this relationship: a fulfillment provider connects their ShipStation account to their client’s, and clients delegate orders into it. The provider works across many clients from one login without ever signing in as any of them, and orders carry the client’s name so nothing gets confused on a busy floor.
No shared credentials
You are not handing over a password. The connection is an account-to-account relationship you can end.Your orders stay identifiable
On the provider’s side, orders display your name in the Store field and a Client field appears on their Orders page, so your work is filterable and never merged with someone else’s.Automation rules can be per-client
Because orders are attributable, packing and carrier rules can be set for your account specifically rather than applied globally.Carrier arrangements are configurable
Carrier sharing between a merchant and a fulfillment provider is a supported setup, so whose rates get used is a decision rather than an accident.
What that means for you:
Connecting ShipStation to OC3PL
Two supported routes. Both live the same business day.
Or share your store API keys
The alternative where a connected-user relationship does not suit how your account is set up.
Turnaround
Direct connections to the warehouse management system are live the same business day.
The hub advantage
Already on ShipStation? Connect it and every channel you have mapped there flows to OC3PL immediately, with no per-channel setup.
ShipStation Questions
Either adding OC3PL as a connected user, or sharing your store API keys. ShipStation supports a 3PL relationship directly: the provider connects their account to yours and you delegate orders into it, so nobody logs in as you. The connection is live the same business day.
No. On the provider’s side your orders display your name in the Store field, and a Client field appears on the Orders page, so orders can be sorted and filtered by client and automation rules can be set per client rather than globally. Attribution is built into how ShipStation handles 3PL relationships.
No — that is the reason to connect ShipStation rather than each channel separately. Every channel you have already mapped in ShipStation flows to OC3PL immediately with no per-channel setup, which is why ShipStation also serves as the backup path for any store that cannot be mapped directly.
Related Reading
The detail behind this, in OC3PL’s own guides.
ShipStation Fulfillment Integration
How OC3PL connects to ShipStation — directly to the warehouse management system, and as the hub that carries every channel you have already mapped.
How OC3PL Integrations Work | WMS, API Keys and Go-Live
What connecting a store to OC3PL actually involves: one warehouse management system, an API key or app install from you, and mapping, SKU matching and test orders from us.
Multichannel Fulfillment From One Inventory Pool
Running a storefront and two marketplaces from one stock pool: how allocation works, what breaks when you split inventory per channel, and what to confirm before you do.
Carrier Management and Shipping Speed
OC3PL's carrier management and shipping speed services deliver same-day fulfillment and optimized carrier selection from our Orange County warehouse.
Switching Your 3PL Integration Without Downtime
How to move your store’s fulfillment connection to a new 3PL without losing orders: the test sequence, what to run in parallel, and what to confirm before you cut over.
How to Automate E-Commerce Operations Safely
A strategic guide to automating order fulfillment and inventory management safely, so you can scale operations without breaking what already works.
Connect ShipStation
Tell us which channels you have mapped in ShipStation and we will confirm what flows across on day one.