You've got mailドアストッパー

The slot where letters slide in is just deep enough to keep bills from drifting away, and the weight holds my heavy front door open without budging. Got it as a joke gift for my husband, but honestly it’s become the most-used thing on our porch.

I was pleasantly surprised by how sturdy this door stop feels—it holds my heavy front door open without slipping, and the built-in mail slot is so handy for organizing bills and letters. The dual-function design really saves space in my entryway.

Bought this for my entryway mainly to hold the door, but the little letter slot on top has turned out to be the part I use most. It keeps the junk mail off my counter and the door stays put when I'm carrying groceries in.