Question: How to install the mailbox.
Option 0: Dig 2 holes in the ground where you want your mailbox. Pour some cement into the holes and put the front legs of a chair into the hols a bit and allow to set up. Set the mailbox on the chair so that it sticks out a bit in front.
Option 1: Buy a large bucket, sink it in the ground a bit. Fill it with wet cement and sink the mailbox pole into it until firm.
Answer: 1