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Install a Mail Slot

If you have mail delivered directly to your door, install a mail slot. This eliminates the need for a wall-hanging mailbox and allows your mail to be placed securely behind a locked door.

how to install a mail slot

Tools & Materials


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Installation of a mail slot isn't difficult. The tricky part is accurately cutting the slot where the hardware will be installed. It's likely the mail slot you purchase comes with a template on the package. If you find no template, use the measurements given in the instructions to create your own cardboard template.

Step 1

Position your template about 36 inches from the floor.

Step 2

Using the template as your guide, mark the four corners of the slot opening. Use a straight edge to connect the marks and define the perimeter of the slot.

Step 3

Using a 3/8-inch bit, drill a hole inside each of the corners so the edges of the hole just contact the lines.

Step 4

Use a jigsaw to cut out the opening, cutting from hole to hole along the lines you made.

Step 5

Hold the outside front face of the mail slot level and in place over the slot. Mark the location for the attachment screws. Repeat this process for the inside face plate. If your mail slot comes with a template, the screw hole placements may already be marked on the template.

Step 6

Drill 1/2-inch-deep pilot holes for all eight fastening screws.

Step 7

Mail slot sleeves are available to fit in the opening between the front and rear faceplates. These sleeves are optional, but add a smooth and attractive finish to your mail slot installation. If you're using a sleeve, put it in place now to ensure that it will fit. Trim the slot if necessary.

Step 8

Attach the front and rear plates with the fastening screws.