what is the difference between priority mail and ground advantage

what is the difference between priority mail and ground advantage is a common shipping-related question among USPS customers comparing speed and cost. Priority Mail offers faster delivery, typically within 1–3 days, and includes tracking and insurance, while Ground Advantage (formerly Retail Ground) is slower, usually 2–5 days, and designed for heavier, non-urgent packages. People asking what is the difference between priority mail and ground advantage are often choosing between cost-effectiveness and delivery speed. Priority Mail is better for perishable or time-sensitive shipments, whereas Ground Advantage saves money on large, less urgent parcels. Knowing the difference helps businesses optimize shipping choices for budget and performance.