Now in Alpha

Your carriers.
Your accounts.
One workstation.

Rate shopping, packing validation, and batch label printing for operations shipping 100–2,000 packages a day. Plug in your existing USPS, FedEx, and UPS accounts — PolyBag handles the rest.

100–2,000 pkgs/day Mid-size fulfillment Your own carrier accounts

Supported carriers

Everything you need to pack,
validate, and ship

Multicarrier Shipping

Connect your existing USPS, FedEx, and UPS accounts and ship from a single workstation. No middleman markup — your negotiated rates, your contracts, one unified workflow.

Rate Shopping

Compare rates and delivery dates across carriers and service levels in real-time. Set rules to pre-select or exclude services per order. Savings compound fast at volume.

Pack & Validate

Barcode-driven packing with weight verification catches mis-picks before they ship. Scan items, confirm quantities, and print labels — all from the same station with USB scales and thermal printers.

Built for real fulfillment workflows

Import orders from Shopify, Amazon, or custom databases
USPS address validation with delivery point verification
Thermal label printing (ZPL) and PDF labels
End-of-day manifests for all carriers
Dashboard analytics and shipping cost reports
Batch shipping for high-volume operations
Role-based access control for your team
Export tracking data back to your sales channels

Get in on the ground floor

PolyBag is accepting a limited number of pilot customers — fulfillment operations ready to cut shipping costs and eliminate packing errors. Early access includes direct support and a hand in shaping the product.

Contact Us
hello@polybag.app