ShipStation is an order management and shipping software used by mid-sized and enterprise e-commerce brands selling across Shopify, Amazon, eBay, Etsy, Walmart, and 200-plus other channels who need centralized fulfillment for high order volumes. Positioned as e-commerce shipping software for omnichannel brands, ShipStation combines automation rules, batch label printing, customizable packing slips, branded tracking pages, returns management, inventory sync, and integrations with QuickBooks, Xero, and 3PL partners. ShipStation is the go-to platform for high-volume e-commerce operators consolidating multiple stores, brands shipping internationally with multi-carrier rate shopping, and 3PLs running fulfillment for multiple merchant clients on a single login.