priority mail vs first class

priority mail vs first class is a critical comparison for selecting the right USPS shipping method. First-Class Mail is suitable for lightweight packages under 16 oz and offers cost-effective delivery within 1–5 days. It includes tracking but limited insurance. Priority Mail handles heavier parcels up to 70 lbs and delivers in 1–3 days with free tracking and up to $100 insurance. Businesses and frequent shippers often prefer Priority Mail for its speed and reliability, while First-Class is great for smaller, non-urgent shipments.