Your Tracking Number and Order Shipment Email are generated automatically when your shipment label is created. This means that your Tracking Number is sent to you before the USPS or UPS receives your package.
If you attempt to track your package before the USPS or UPS has received it you will get a message saying:
“There is no record of that mail item. If it was mailed recently, it may not yet be tracked. Please try again later.”
This just means that the USPS or UPS has either not received your package yet or the tracking information has just not been updated yet.
*Please note that order tracking is not instantaneous, it is not unusual for the USPS to take a day or more to update tracking information.