FedEx’s new deal comes nearly six years after its express business dropped Amazon, and about four months since archrival UPS cut its Amazon business in half.

Amazon will outsource delivery of large packages to FedEx in a deal that should prove more profitable on a per-shipment level than shipments under the companies’ partnership that ended six years ago.

Amazon has hired FedEx to handle some of its large package deliveries, the companies said on Monday, weeks after UPS said it was halting its less-profitable deliveries for the e-commerce retailer and cutting 20,