What is the maximum weight limit for a First-Class Mail letter that has been barcoded?

The maximum weight limit for a First-Class Mail letter that has been barcoded is 3.5 ounces. First-Class Mail offers a reliable and economical way to send letters, and barcoding is used to enhance the efficiency and tracking of mail. By adhering to this weight limit, senders can ensure their mail is processed correctly and delivered in a timely manner. The weight threshold of 3.5 ounces is specifically set to accommodate additional features or items without exceeding the service guidelines, which is essential for maintaining the quality and reliability of the postal service.