Let’s talk mail: How to replace a mailbox

Even with the rise of emails and digital communication nowadays, the mailbox continues to be a staple feature of the American home. Since the 1800s, mailboxes have been a primary source of communication between communities. Today, it combines practicality with a touch of personalization.

Curious about how to replace a mailbox? This article will guide you through the steps on mailbox replacement, the tools needed, and practical tips for a hassle-free installation.

Signs you need to replace your mailbox

It’s normal for your mailbox to sustain wear and tear over time, so knowing when it’s time to swap yours is key to protecting your deliveries and maintaining your house aesthetic. Below are common signs that you should watch out for:

• Visible damage like rust, cracks, and a broken flap

• Poor security if the existing mailbox has loosened, or it’s now easy to tamper with

• Doesn’t fit modern mail or parcels

• Aesthetic reasons, like if you’re looking to upgrade your exterior, the color or design of the mailbox no longer aligns with the rest

If your mailbox shows any of these signs, consider replacing it with a fresh one that better suits your needs and style.

Types of mailboxes to consider

Typical American curbside mailbox on a street (Source: iStock)

Once you’re set on replacing your letterbox, the next thing is to narrow down your choices. Different types cater to home setups and needs. Here’s a quick overview of the common ones:

• Post-mounted mailbox: These are usually located at the front of the house, near the curb, or at the end of the driveway.

• Wall-mounted mailbox: Usually attached to the house’s exterior wall for those without a yard.

• Mailbox with parcel compartment: This has a larger capacity to fit bigger deliveries, like packages, and not just letters.

• Door-mounted mailbox: The slots of a door mailbox go through a front door or a small flap.

• Locking mailbox: This type is known for its durable construction and secure locking mechanisms to give you peace of mind.

• Decorative or custom mailboxes: These unique mailbox designs are a perfect combination of functionality and style.

As there are many options available to you, feel free to select one that best complements your space and accommodates the volume of mail you receive.

Tools and materials you’ll need

When replacing a mailbox, make sure to prepare your tools and materials before starting. Here’s a checklist of the essentials you’ll need:

Tools:

• Screwdriver or drill to fasten the screws

• Measuring tape to get accurate dimensions for your mailbox position.

• Pencil to mark the areas for your drill holes

• Chisel (for door-mounted types) to shape and smooth the edges of the cutout opening

• Sandpaper to smooth any rough edges for a safe and clean finish

• Spirit level to make sure the installed mailbox is even and straight

• Safety glasses and work gloves for protection during cutting and drilling

Materials:

• New mailbox to replace your old one

• Screws (usually included) to hold the mailbox in place

• Weather stripping or sealant (if needed) to create a tighter fit while preventing moisture around the edges of your mailbox slot

Steps to replace your mailbox

Modern black metal mailboxes (Source: iStock)

Once you’ve got all your essentials, it’s time to go over the steps on how to change a mailbox. From removal to measuring and installation, follow these steps carefully to ensure a successful project.

Step 1: Remove the old mailbox

Start to remove the old mailbox by unscrewing its sides slowly. If the screws are too rusted, try applying a lubricant to make removal easier and avoid scratching the edges.

For door-mounted or wall-mounted mailboxes, have someone support the mailbox from the other side as you remove the last screws to ensure it doesn’t bend or fall. For post-mounted mailboxes, gently lift the unit off its post or mounting base.

Don’t feel rushed to remove the old mailbox at once. Take your time, especially if yours is among those residential mailboxes that have been around for years. A slow, careful removal helps ensure any debris has been cleared out and the new surface is clean and ready.

Step 2: Measure your mail and space requirements

Next is how to measure a mailbox. Check the height, width, and depth of your usual mail to get an idea of the internal dimensions that your replacement mailbox requires. It’s best to add an allowance for parcels or larger envelopes. This allowance helps accommodate various mail sizes without bending or damaging.

According to USPS guidelines, curbside mailboxes must be positioned 41 to 45 inches from the ground to the bottom of the mailbox. The mailbox door should be 6 to 8 inches back from the curb. This can be done by a professional handyman specializing in mailbox fittings to ensure they meet USPS standards.

For door-mounted or wall-mounted installations, measure the available space on your door or wall to ensure your chosen mailbox will fit properly.

Step 3: Mark the installation position

Using your measuring tape and pencil, mark where your new mailbox will be installed. Use a spirit level to ensure your markings are straight and even.

For post-mounted mailboxes, ensure the mounting height will be 41 to 45 inches from the ground to the bottom of the mailbox. For door or wall installations, mark the center point and outline where the mailbox will sit.

Step 4: Prepare the opening (for wall-mounted types only)

Note: Skip this step if you’re installing a post-mounted or door-mounted mailbox.

For wall-mounted mailboxes, you’ll need to prepare the opening. The opening must be slightly larger than the mailbox dimensions to allow for easy installation and adjustment. 

Start by marking the exact position where the mailbox will fit; this should align with your measurements from Step 2. Use a drill to make the initial two holes in the corners of the marked area, then use cutting tools like an angle grinder or saw to cut out the opening. Be sure to wear safety gear and smooth any rough edges to avoid damage and injury.

Step 5: Install the new mailbox

Position your new mailbox according to the marks you made. For post-mounted mailboxes, secure the unit to its post or mounting base. For door or wall-mounted types, align the mailbox with the prepared opening or marked position.

Insert and tighten the screws gradually, alternating between sides to ensure even pressure. The screws should be firm enough to hold the mailbox securely in place, but avoid overtightening, which can damage the mailbox or mounting surface and lead to cracks.

Once installed, use your spirit level to check that the mailbox is straight. Make any necessary adjustments before fully tightening all screws.

Step 6: Seal and weatherproof

The last step is to seal and waterproof your new mailbox. This protects it against harsh rain and wind. Apply a weather-resistant sealant around the edges and any screw holes to prevent water from seeping inside.

Meanwhile, if your mailbox is made of metal or wood, there is more painting work to consider, such as adding a rust-resistant paint or protective coating for extra durability. You can also install a small cover or awning above the mailbox to provide extra shelter from direct rain and sun.

Tips for a successful mailbox installation

Parcel placed in a residential mailbox (Source: iStock)

Installing a mailbox can take some time, so it’s important for you or the handyman not to rush and risk mistakes. Follow these tips for a smooth and successful installation at home:

• Don’t overtighten the screws. This can damage your mailbox or mounting surface and lead to cracks. Especially if yours is a mailbox for wooden door, make sure the screws are tight enough to hold the mailbox securely in place without adding too much pressure.

• Check that the flap or lid opens and closes smoothly after installing. Once the job is done, immediately check if the mailbox flap replacement or lid is functional. This can prevent damage to your mail and avoid delivery issues later on.

• Add security features. Some features include selecting a lockable mailbox with a secure flap with replacement keys, choosing a location that’s visible but not easily reachable, and using strong fasteners to prevent it from being easily removed.

Skip DIY mailbox replacement hassle with Airtasker

Swapping out your old mailbox doesn’t have to turn into a weekend-long headache. From tricky measurements to heavy lifting and sealing, DIY can get messy fast. With Airtasker, you can skip the hassle and hand the job over to experienced pros who know exactly how to get it done right.

Browse the platform to find a skilled mailbox installer with the specific expertise your project calls for. Compare quotes from Taskers, choose a time that fits your schedule, and chat with your installer ahead of time to make sure you’re aligned on the details.