To prevent the theft of packages and increase the reliability and security of delivered packages from consignor to a consignee, it is necessary to create a secured delivery box built into a garage door. The delivery box built in garage door includes an opening in garage door, built in housing with sliding lid, or pivoting lid, on input opening. The housing has one or two output openings on a sides or bottom. Also, the housing of the delivery box has an optionally sloped floor on either a single side or both sides, or flat floors, or rolling conveyor floor or a ball rolling conveyor floor.