Abstract: In some embodiments, a secure package delivery system and methods may include a door lock smart device in communication with a system server, a delivery information device in communication with the system server, and a client device in communication with the system server. The delivery information device may provide delivery status information of a package to the system server. The door lock smart device may govern access to a door at the location to which the package is to be delivered. The system server may, in response to receiving the delivery status information of the package from the delivery information device, communicate with the door lock smart device to enable access to the door governed by the door lock smart device. The system server may also be configured to communicate delivery completion information to the client device.