Choose the mailbox type (post-mounted, wall-mounted, or curbside) and confirm it meets local requirements
Check the mailbox location rules for height, distance from the street, and placement relative to the curb/road
Gather tools and materials: mailbox kit, post or mounting hardware, level, measuring tape, shovel/auger, concrete or gravel, screws/anchors, drill, wrench, sealant (for weatherproofing), and marker
Assemble the mailbox according to the manufacturer instructions
Mark the exact installation location
If installing a post:
Dig a hole to the recommended depth for your area (typically below frost line)
Place the post in the hole and ensure it is plumb
Set the post with concrete (or gravel/soil method if specified by the kit instructions)
Allow concrete to cure fully before mounting the mailbox
If mounting to an existing surface:
Locate studs or use appropriate anchors
Mark mounting hole positions
Drill pilot holes
Secure the mounting bracket with screws/anchors rated for the surface
Position the mailbox on the post or bracket at the required height and orientation
Use a level to confirm the mailbox is straight
Attach the mailbox to the post or bracket using the provided hardware
Tighten all fasteners securely
Seal any exposed gaps or penetration points with weatherproof sealant (as appropriate)
Install the mailbox door/flag components per the kit instructions
Verify proper operation of the door and any flag mechanism
Ensure the mailbox opening faces the correct direction for mail delivery
Perform a final stability check and tighten any loose hardware
If required, confirm compliance with local postal regulations (height/placement)