what is first class shipping refers to USPS First Class Mail, one of the most popular and affordable shipping options for small parcels, letters, and postcards. First Class shipping provides fast and reliable delivery within the United States, with delivery times typically ranging from 1-3 business days, depending on the destination. First Class Mail is ideal for lightweight shipments, with a maximum weight limit of 13 ounces. This service is widely used by individuals and businesses for personal correspondence, small e-commerce shipments, and documents. It offers features like tracking, forwarding, and return services for undelivered items. Additionally, First Class Mail includes free forwarding services, meaning if the recipient has moved, the package can be rerouted to their new address. It’s also a cost-effective option for people looking to send items without paying the higher rates associated with other shipping methods like Priority Mail. While First Class Mail is not as fast as some express services, it provides a balance of affordability and speed for everyday shipping needs.