Carriers
Connecting carrier accounts, supported carriers, and carrier settings.
Supported Carriers
CommerceShip integrates with major US and Canadian carriers, plus regional and aggregator options. Direct carrier integrations USPS: Priority Mail, Ground Advantage, Priority Mail Express, Parcel Select, and more. Full capabilities including rating, labels, tracking, manifests, surcharges, and refund claims. CommerceShip discounts available. FedEx: Ground, Home Delivery, Express Saver, 2Day, Priority Overnight, International Priority, and more (30 services). Rating, labels, tracking, manifests, and surcharges. UPS: Ground, 3 Day Select, 2nd Day Air, Next Day Air, Worldwide Express, and more (12 services). Rating, labels, tracking, manifests, and surcharges. Canada Post: Regular Parcel, Xpresspost, Priority, Expedited Parcel (8 services). Rating, labels, and manifests. UniUni: Canada domestic and US-to-Canada. Rating and labels. Carrier aggregators Through EasyPost, CommerceShip connects to 71+ additional carriers including PostNL, Maersk, DHL, OnTrac, and regional last-mile providers. This extends your carrier options without needing separate accounts for each. BYO carrier account Use your own negotiated carrier rates and accounts. CommerceShip connects to your existing carrier contracts so you keep your discounts. USPS discounts CommerceShip offers USPS discounts through our carrier partnership. These are available automatically when you ship with USPS through CommerceShip. If you ship with a carrier not listed here, let us know and we can explore integration options.
Connecting a Carrier Account
To start shipping with a carrier, you need to connect your carrier account to CommerceShip. Before you start Make sure you have your carrier credentials ready. Each carrier has its own authentication method. You will typically need your account number and either API credentials or login information from the carrier's portal. General steps 1. Navigate to carrier settings in CommerceShip. 2. Select the carrier you want to add. 3. Enter your credentials as prompted. 4. CommerceShip will verify the connection. 5. Once connected, the carrier's rates and services will appear when you rate shop. Troubleshooting If the connection fails, verify your credentials work in the carrier's own portal first. Check the carrier's status page for any ongoing outages. For USPS, make sure you are using your EPS (Enterprise Payment System) credentials, not your regular USPS.com consumer account. If you are still having trouble, contact us through chat with the carrier name and any error messages you see.