Can you put any package into a drop off slot as long as it fits?

mail drop slot
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I use a close pin to attach the letter to the slot flap The mail carrier picks it up when he drops new mail into my slot You could use a

I would most likely take the time to walk to one of those blue mailboxes on the sidewalk + drop the letter in one of those Or sometimes

mailbox slot cover POCHAR Mail Slot Drop Box Secure Rent Deposit Key Return

mail slot for front door Search from thousands of royalty-free Mail Slot stock images and video for your next project Download royalty-free stock photos, vectors, HD footage and