We lived in a small community at our last place that had a single area for all member mailboxes. There were approx 25 individual mailboxes all placed in a row (fence) to make it easy on the post office driver. Well, the postal carrier would always mix up my mail. i would have to hunt for my mail in other boxes and she would constantly place someone else's mail in my box.
My solution was quite simple. I installed one of these, perched on a post higher than all other surrounding mailboxes. The mail delivery driver never messed up my mail after that.
The other reason for going this route was to peeve off all the other members (who I'd had run-ins with in the past). I figured they'd dislike my elevated box which stood proudly above all other mailboxes in the row.
The only issue I had was that someone was triggered and ripped the head off. It was found many months later in the bushes. Fortunately, one kind neighbor crafted a new rooster head for me out of aircraft aluminum and was hand painted just like the original. I thru bolted it to the box and its been there ever since.
I willed the mailbox to my mother that still lives in that small community when we sold our place. Her mail doesn't get messed up either.
