DELIVERY SYSTEM AND DELIVERY SERVER

A delivery system for delivering a delivery item to a vehicle includes a vehicle equipped with a cooling box which is provided with an openable door and configured to accommodate a delivery item, at least one deliverer terminal provided with a notification device for sending a notification to a deliverer, and a delivery server configured to communicate with the vehicle and the deliverer terminal. The delivery server sends to the deliverer terminal a notification indicating that the door is unclosed if the deliverer forgets to close the door.