priority mail saturday delivery is a service offered by the United States Postal Service that ensures packages sent via Priority Mail are delivered even on Saturdays. This service is convenient for businesses and individuals who need to ensure that important items reach their destination quickly, even on weekends. USPS Priority Mail typically offers 1-3 day delivery, and with Saturday delivery, customers can receive their shipments without delay. This is especially useful for e-commerce businesses that want to maintain quick turnaround times for their customers. Priority Mail on Saturday delivery also includes tracking, so customers can monitor their shipments and know exactly when to expect their delivery.