Amazon is reportedly preparing to end its decades-long partnership with the U.S. Postal Service (USPS) and expand its own nationwide delivery network. The potential move comes after negotiations over a new service agreement stalled. Amazon has been the Postal Service's largest customer, generating over $6 billion in annual revenue for the agency. The e-commerce giant is now evaluating all its options to ensure continued delivery for its customers and is reportedly readying plans to pull its package volume from the USPS by the end of 2026, though the plans are not yet final. This strategic pivot would represent a massive expansion of Amazon's own logistics infrastructure as it seeks greater control over its last-mile delivery operations. A potential separation would have significant financial repercussions for the USPS, which has faced financial struggles for years. While Amazon's stock saw a slight 0.2% increase in premarket trading following the news, the long-term market reaction will depend on the final outcome of the negotiations.