What is priority post refers to a shipping service offered by postal carriers, like USPS, which ensures faster delivery for mail and packages compared to standard mail services. Priority Post, often called Priority Mail, guarantees delivery within a specific time frame, usually 1 to 3 business days for domestic shipments. It is designed for customers who need quicker delivery without opting for express services. This service often includes benefits such as tracking, insurance, and delivery updates. Priority Post is typically used for important documents, small packages, and other time-sensitive shipments.