Installing your mailbox is not a difficult task. Select a location that allows you to safely retrieve your mail. Postal regulations require that the mailbox door be located between 6 to 8 inches from the curb. Measure from the center point where the mailbox is attached to the post out to the front door then add 6 to 8 inches to that figure. Using that figure measure from the curb to find the center of your hole.
Postal regulations require the bottom of the door be located between 40 to 44 inches from the ground. When digging your hole it is recommended to dig a 12 inches diameter hole and the depth of around 20″. Cover the bottom of the hole with about 2 inches of gravel then place the post on the gravel. Check with your local post office for requirements some localities do not allow a mailbox post to be cemented in the ground. Using a level make sure the post is straight on all four sides and secure it with wood strips above the ground. Next either back fill the hole with dirt or cement keeping the post level.
Many mailboxes have decorative posts that slide over the 4X4 post. Finally attach the mailbox to the post (if using cement you will want to wait till the cement has cured. Now you can start receiving your junk mail and bills!