Did you know that FedEx and UPS are not required to get a signature to deliver a package unless you pay them to do so? This is a common misconception about the large courier services. Unless you request and pay for a signature service, all that your driver is required to do is deliver the package. By deliver, this can mean leave it at your front door, front gate, or other area deemed by the delivery person as being “safe”.
This is true for business (non residential) deliveries, as well. Shipments to businesses are NOT automatically signed for. The carriers attempt to obtain a signature from someone at the delivery address or a neighboring address, but this is not a requirement for delivery.
As they say, the devil is in the details. If you are shipping anything with any value, do not count on a signature upon delivery unless you told the carrier to secure one. If you did not and your package is left at a doorstep, the carrier has completed their agreement with you. If your package recipient claims non delivery, are they being honest with you?