If a package is lost, we suggest first waiting 7 business days from the shipment date (or 30 days for international shipments). Sometimes it just takes a little extra time for packages to get delivered.
If there have still been no tracking updates after that time, and the package still hasn’t been delivered, then you can submit a missing mail search request with USPS or call them directly at 1-800-ASK-USPS
Another option is to call your recipient's local Post Office and ask for the GPS location scan information. When you present the tracking number, USPS can tell you the GPS location where the package was scanned and delivered within a 6-foot radius 👍 Then, you can inform your recipient that you requested the GPS scan. A little information is always better than none!
For insured services (like Priority Mail) or if you purchased additional insurance, you may be eligible to file an insurance claim for the lost package.