Hereof, should I be worried if USPS tracking hasn't updated in 3 days?
Not necessarily. While it is required that packages with tracking numbers be scanned at every stop along the way from origin to destination, these scans are sometimes missed or skipped.
Similarly, what happens if USPS tracking doesn't update for days? Contact USPS Customer Service
This number – 1-800-275-8777 – will get you with the USPS customer service support hotline on the phone, giving you a chance to explain your situation, provide your tracking information, and see if the USPS can find your package (and give you an update) using their backend tools.
Keeping this in consideration, why can't I track my shipment?
If your tracking number doesn't work or has errors, it could be that your shipping hasn't been picked up yet by the courier or the courier has not scanned it as received. Please allow up to 24 hours for your tracking number to be logged by the shipping courier.
What happens if USPS tracking doesn't update?
If your tracking details are not updating for days, then you should give a call to the USPS officials and ask them about your package. They will give you all the information you need.