tracking first class international mail Tracking First Class International Mail through USPS offers limited visibility depending on the destination country. While tracking is included for many destinations, updates may stop after U.S. departure. The service is cost-effective for small packages up to 4 lbs but lacks guaranteed delivery dates. Delivery times range from 7 to 21 days. For better tracking, USPS offers services like Priority Mail International or Global Express. First Class International is best suited for non-urgent shipments that require budget-conscious options.