usps first class vs ground advantage

usps first class vs ground advantage compares two types of shipping services offered by USPS. First-Class Mail is typically used for smaller packages, letters, and postcards and offers quick delivery within 1 to 3 business days. Ground Advantage is a service for larger, heavier items and is less expensive than First-Class Mail but takes longer for delivery. While First-Class Mail offers faster delivery, Ground Advantage is a more cost-effective option for heavier shipments.