usps first class mail shipping time

usps first class mail shipping time refers to the delivery speed for items sent via USPS First-Class Mail. Typically, First-Class Mail delivers within 1-3 business days for most destinations in the U.S. It is the most economical choice for lightweight packages (up to 13 ounces), postcards, and letters. First-Class is ideal for individuals and businesses that need to ship small items or documents at a low cost, but it does not include expedited services like USPS Priority or Express Mail.