Anyone can track a letter while it’s in the mail as long as it received a tracking number when it was mailed. Regular letters only receive tracking numbers if the sender opts to mail the letter with a return receipt or delivery confirmation. When a letter is mailed using one of those methods, it is tracked by using the tracking number on the United States Postal Service (USPS) website. You must pay a fee for the service.
Get the tracking number of the letter you want to track. The tracking number is listed on the receipt given at the time of shipment. If you are not the shipper, you will have to contact the shipper to get the tracking number.
Go to the USPS website to track your letter. Follow the link to “Track and Confirm” your letter.
Using the tracking number you were given, enter it into the provided box and click “Track”. The results provided by your tracking number show every piece of information the USPS has regarding your letter; where it is, where it originated and when it will arrive.