USPS warns about 'smishing' text messages disguised as reputable sources like the Postal Service. Beware of unfamiliar links and do not click them.

USPS also offers another service, called Informed Delivery, in which customers can receive emails showing their mail and packages as they get scanned. To sign up, you must also visit the USPS website.

Postal Service IT officials have upgraded the service's 15-year-old mainframe system to handle more transactions and lower the cost of operating the system.

As he wrote, "The USPS database reflected that an individual using a computer or other device with IP address 75.67.6.214 accessed the USPS Track 'n Confirm website to track the progress of both ...