what is usps first class postage

what is usps first class postage is a mail service offered by the United States Postal Service (USPS) for small and lightweight packages or letters. USPS First-Class Mail is one of the most affordable shipping options, designed for packages that weigh 13 ounces or less. First-Class Mail includes services like tracking and delivery within 1-3 business days, depending on the destination. It’s commonly used for personal letters, bills, and light packages, offering fast and budget-friendly shipping for everyday mail and small e-commerce shipments.