OnBuy is one of the fastest growing marketplaces internationally. Extensiv Integration Manager integrates directly with your OnBuy Seller account to load orders and send back tracking information and inventory levels. Want a free year of Extensiv Integration Manager!? For a limited time Merchants who can ship to UK buyers are eligible for a free year of Extensiv Integration Manager by selling on the OnBuy marketplace. About Leanafy’s OnBuy Integration Sales Order Download from OnBuy to Integration Manager Sales Order Delivery from Integration Manager to WMS/OMS Shipment Tracking and Inventory Level Upload from WMS/OMS to Integration Manager Shipment Tracking and Inventory Level Upload from Integration Manager to OnBuy