Corso Partner: Easypost

Description

Multi-carrier complexity, handled.

EasyPost is the shipping API behind some of the largest brands in commerce — Walmart, Dell, eBay, Warby Parker, Starbucks. One integration unlocks 100+ carriers, automated label generation, address validation, tracking, and rates discounted by up to 83%. The complexity goes away. The shipping just works.

Built for engineers. Trusted by ops.

Hit one endpoint to compare rates across UPS, FedEx, USPS, DHL, Canada Post, and dozens more. Hit another to generate a label. Hit another to track a package end-to-end. The API surface is clean, well-documented, and battle-tested at scale — billions of shipments a year run through it without breaking a sweat.

Shipping AI, built in.

Luma AI surfaces the cheapest route per shipment, flags packages at risk of delay, and identifies the carrier surcharges quietly eating your margin. You don't need a data team to find the savings — EasyPost finds them for you.

FEATURES

100+ carriers. One API. From USPS to last-mile regionals to international consolidators, every carrier you'd ever consider is already integrated. Switch carriers by zone, service level, or cost ceiling without rewriting your code.

Labels in milliseconds. Generate a shipping or return label from a single API call. PDF, ZPL, PNG, EPL — whatever your printer expects. At warehouse scale, milliseconds matter, and EasyPost ships them.

EasyPost + Corso: returns on the labels you already use. When a Corso claim is approved, the return label is generated against your EasyPost account — your negotiated rates, your preferred carrier per zone, your service level, your label format. Domestic, regional, or international. Returns shipping plugs straight into the infrastructure you already trust for outbound.