eBay Certified Solutions Provider Marketworks announced a partnership with Interapptive to integrate Interapptive's Shipworks shipping automation software into Marketworks Order Management System. Marketworks said its sellers will be able to seamlessly download orders ready for shipment, print shipping labels and packing slips, create professional invoices, instantly provide direct tracking links to buyers, and update the status of orders within Marketworks. Shipworks instantly passes data to Endicia, Stamps.com, UPS WorldShip, and includes built-in UPS Online Tools, resulting in a streamlined shipping process. Marketworks sellers will be offered a 30-day introductory free trial with ShipWorks, after which customers pay a flat monthly fee based on monthly shipment volume.