Door mail slots

Large Mail Slot with Interior Frame door mailbox slot It should be simple enough to carve a block of styrofoam to fit in the space behingd the outside door and fit a piece of brass or wood to the door with round slot re4 Hi all, winter is approaching and I'm trying to figure out the best way to deal with the mail slot on my front door that lets a lot of cold

door mail slot front door mail slot Glossy black wooden front door with a brass ring doorknob and matching knocker finished with a brass mail slot A blue arch front door