Abstract: A security dropbox for receiving mail and like items includes an enclosure having walls. The enclosure walls include a front wall with an opening for receiving delivered items. A service door covers the opening on an exterior of the enclosure. The service door is pivotably attached to the front wall adjacent to a lower rim of the opening, and has an interior side facing the enclosure. A service bin is disposed on the interior side of the service door. The service bin is positioned to hold delivered items when the service door is open and to drop the delivered items when the service door is closed. A secure bin is disposed in the enclosure under the service bin. The secure bin is positioned to receive the delivered items dropped from the service bin. The service bin is made up of the interior side of the service door, a bin floor extending at an obtuse angle from the interior side of the service door, and bin sidewalls extending between adjacent edges of the service door and the bin floor.