does usps deliver mail on saturday

does usps deliver mail on saturday? Yes, USPS delivers mail on Saturdays. Saturday delivery is part of USPS’s regular service schedule, and most mail is delivered on this day, including First-Class Mail, Priority Mail, and packages sent through USPS Retail Ground and other services. However, Sunday delivery is limited to certain mail classes like Priority Mail Express. USPS has also been expanding its weekend services in recent years, so customers can expect delivery on Saturdays unless there is a major disruption.