us postal first class mail

us postal first class mail is an affordable shipping service offered by USPS for small, lightweight items. It is commonly used for sending letters, documents, and lightweight packages, with delivery times typically ranging from 1 to 5 business days within the U.S. First-Class Mail is an economical choice for e-commerce businesses that sell smaller items and want to keep shipping costs low. Customers often appreciate the fast delivery and lower shipping fees associated with First-Class Mail.