What is a fundamental way that the postal service funds its operations?

The primary method by which the postal service funds its operations is through the revenue generated from postage, products, and services. By charging customers for mailing letters and packages, as well as providing various additional services like shipping insurance, money orders, and retail products, the postal service is able to cover the costs of running its operations. This revenue model is essential for maintaining the infrastructure needed for mail delivery and other services without relying on taxpayer funding, as the postal service operates as an independent entity.

In contrast, government grants, private donations, and ad revenue are not significant sources of income for the postal service. Instead, they rely primarily on the fees paid by customers for their services and products to sustain their operations effectively. This model allows the postal service to serve the public while ensuring financial sustainability.