Will USPS tell me if my package was seized?

Once the postal inspector receives the suspected mail, they will attempt to contact the sender or recipient and, if unsuccessful, scan it as “seized by law enforcement.” The scan is visible in the Postal Service’s tracking system to the sender and recipient as well as postal personnel.

What happens if a package is seized?

Once the package is ‘seized’, it may be examined by a drug dog, and a warrant will be issued to open the package should the dog alert for the presence of drugs (typically, the post office will line up 6 packages, five which they know do not contain drugs, and the suspected package).