DIY mail slot cover

How to cover this mail slot up so cold air won't come in? door mail slot cover This can involve replacing your front door with one that doesn't have a mail drop Or you could install a slot cover for a more cost-effective door mailbox slot Magnetic Mail Slot Covers include a flexible magnetic sheet material which allows mail to be easily placed through slot openings with little resistance

door mail slot Mail Slot Catcher for Door Mail Slot, Black Indoor Mail Slot Cover Interior Draft Stopper, Large Size, Self-Adhesived, Large Capacity, Dogs-Proof, Mail Slot