evidence: No, the Postal Service isn't losing a fortune on Amazon [...] Amazon isn’t causing the United States Postal Service to lose a fortune. In fact, it’s contributing to its biggest growth sector, package delivery. Deals like the one with Amazon brought in $7 billion in fiscal year 2017. While we don’t know the deal USPS crafted with Amazon, we know it’s not losing money. A 2006 law codified profitability into law, and an independent regulatory commission that reviews their deals annually gave it a green light on March 29.