YSK: The USPS, UPS, and FedEx all have free services that will let you get automatic notifications for packages being delivered to your home

This is helpful year-round, but especially so during the holiday season. Instead of having to request notifications from the place you purchased items from, or manually entering the tracking number, they just automatically notify you about any packages coming to your house.

USPS: Informed Delivery

UPS: Μy Choice

FedEx: Delivery Manager