Growing delivery volumes and returns are reshaping consumer behavior, fulfillment strategies, and the economics of ecommerce in 2026.

Amazon remains in negotiations to extend its USPS partnership but is reassessing its delivery strategy after learning the Postal Service may hold a reverse auction that would require major shippers to bid for facility access. The unexpected shift injects uncertainty into Amazon’s network at a time when it is rapidly expanding Amazon Logistics and investing heavily in rural delivery. Because Amazon accounts for a sizable share of USPS revenue, a split would significantly strain the agency and could accelerate Amazon’s rise as a competing carrier, reshaping how retailers meet growing consumer expectations for fast, reliable delivery.