Burglar unlocked door through mail slot

Mail Slots For Doors door mail slot blocker Our house does not have a mailbox Instead, we have a mail slot in the front door—the old fashioned kind made of metal, with a spring-loaded door slot mailbox Stainless Steel Door Mail Slot with Extra Large Mail Catcher and Combination Lock - 11'' x '' Mail Slot Cover and Extra Large Mail Slot Catcher

door slot lock If you do want to do it, the easiest way is to just put some shrink wrap over it Get some double-sided tape, make a square around the mail slot