OnTrac shipping integration
Ship with OnTrac from one platform
Compare OnTrac rates, print labels in bulk and push tracking to every marketplace automatically — from the same pick-and-pack workflow you use for every other carrier in United States.
Everything you need to ship with OnTrac
Live rate shopping
See OnTrac rates next to every other carrier and pick the cheapest or fastest service per order.
Bulk label printing
Print OnTrac 4x6 labels in PDF or ZPL for hundreds of orders at once.
Automatic tracking upload
Tracking numbers go back to Amazon, Walmart, eBay, Shopify and more as soon as the label prints.
Voids & adjustments
Void unused OnTrac labels and see carrier adjustments against each shipment.
Multi-warehouse ready
Ship from any warehouse or 3PL location with the right origin address automatically.
Shipping cost reporting
Actual postage recorded per order so you know your true profit.
Get started in 3 steps
Connect OnTrac
Add your own OnTrac account or use Willowcommerce discounted rates where available.
Set shipping rules
Choose default services, packages and automation rules per store or warehouse.
Rate, print and ship
Buy labels in bulk and let tracking sync back to every channel.
What is the Willowcommerce OnTrac integration?
Willowcommerce (formerly GBCommerce) is multichannel eCommerce software for sellers, brands and 3PLs. Its OnTrac integration lets you compare rates, print labels in bulk, void unused labels and push tracking to every marketplace — alongside USPS, UPS, FedEx, DHL and other carriers.
What's included
- Live OnTrac rate shopping at pack time
- Bulk label printing (4x6) and manifests
- Tracking pushed back to the originating marketplace
- Landed shipping cost recorded against each order
OnTrac integration FAQ
Does Willowcommerce integrate with OnTrac?
Yes. Willowcommerce lets you rate shop, buy and print OnTrac labels, void unused labels and track shipments from the same screen you use for every other carrier.
Can I use my own OnTrac account?
Yes. You can connect your own OnTrac account and negotiated rates, or use platform rates where offered.
Is OnTrac tracking sent back to my marketplaces?
Yes. OnTrac tracking is uploaded automatically to the marketplace or store the order came from.
Which label formats are supported?
Labels print as 4x6 PDF or ZPL for thermal printers, individually or in bulk batches.
Why sellers choose Willowcommerce for OnTrac
- Compare every carrier in one click
- Bulk labels with automatic tracking upload
- Multi-warehouse and 3PL ready
- True shipping cost per order