weight for first class post

weight for first class post varies based on the item being shipped. For USPS First-Class Mail, the maximum weight for letters is 3.5 ounces, while the maximum weight for packages is 13 ounces. First-Class Mail is an affordable option for lightweight items, offering fast delivery at a lower price than other mail classes. It is commonly used for sending small packages, letters, and documents within the U.S. Customers shipping heavier items may need to consider other USPS services like Priority Mail or Priority Mail Express for faster delivery options.