Got It Wholesale Stainless Steel Mail Slot

How can I clean up my front door mail slot cover I would sand it down with a fine grit sandpaper and spray it with a metallic spray paint

The slot features a spring loaded front Don't forget not to tear cardboard backing as it is needed to line up and cut out hole in door for mail slot (if

front door with mail slot mail slot halfway up our front door I can easily see someone reaching in with some tool and unlocking the door Replacing the door is not an option

front door mailbox slot Mail slots all seem to be abot 3 wide Is there some sort larger opening door or drop box type thing that could be installed on the front door