USPS Tracking is included at no charge for First-Class Package Service-Retail and First-Class Package Service-Commercial. Although First-Class Mail® postcards, letters, and flats are not eligible for USPS Tracking, those items are eligible for other extra services that provide barcodes for scanning.
The US Postal Service’s First Class Mail International is an affordable way to send mail—including letters, bills and postcards—and small packages weighing four pounds or less to international destinations. Using First Class Mail International, deliveries generally take between 7–21 days to arrive, although the USPS does not guarantee delivery dates or times. Mail may travel to its destination by ground, air or a combination of both.
Keep up with your international shipment with USPS International Tracking. The USPS provides different levels of package tracking for international packages depending on the mail class. For Global Express Guaranteed and Priority Mail Express International, you receive delivery status information using the Track & Confirm tool. For Priority Mail International, you can get delivery information for all packages with two exceptions: Tracking information is only provided optionally for select destinations when you use Priority Mail International Flat‑Rate Envelopes or Small Flat‑Rate Boxes. Free USPS Tracking is available for select destinations for First Class Package International Service shipments.