Best Locking Mailboxes for 2021: Buying Guide

Are you worried about the security of your mail? If so, a locking mailbox will ease your mind. As long as they meet the United States Postal Service’s guidelines, you can use a locking mailbox for mail delivery. Locking mailboxes prevent thieves and mischievous children from swiping your mail, reducing the likelihood of identity theft.

Mail Boss 7106
Mail Boss Locking Mailboxes

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Locking Mailboxes | Recommended

Our Pick No. 1
Mail Boss 7506 Mail Manager Curbside Locking...
Mail Boss 7506 Mail Manager Curbside Locking...
QUALITY: 14- and 16-gauge galvanized welded steel construction defends against vandalism

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API


Locking Mailboxes | Recommended

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

Our Recommended Locking Mailboxes in 2021

Want to safeguard your mail with a locking mailbox but don’t know which one to choose? We’ve chosen five curbside locking mailboxes that meet our high standards in the areas of durability, security, and capacity.

10) Mail Boss 7205

The Mail Boss 7205 locking mailbox is a USPS-approved device for keeping your mail safe and sound from thieves. Inside of the box, customers will find most if all of the necessary hardware to safely mount the unit onto wood or metal posts. Made of galvanized welded steel and finished with a powder coating for maximum weather resistance, there’s very little risk of the Mail Boss breaking or corroding over time.

The 7205 measures 21 x 10.6 x 12 inches with a wide mouth to receive mail. The baffle door’s 12-disc wafer lock opens with a key, and the door swings downward in such a way as to prevent damage to the powder-coated finish.

Mail Boss 7205 Package Master Curbside Locking...
  • Your purchase includes One Mail Boss Package Master Curbside Locking Security Mailbox in Granite +...
  • Mail Box dimensions – 21.5" D x 12" W x 16.5" H | Weight – 53 lbs. | Packages – 10.5” L x 3.5” –...
  • Stainless steel hinges and powder-coated finish for optimum weather resistance

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

9) Mail Boss 7526

Mail Boss’ 7526 is another Post Master General-approved letterbox. It’s made almost entirely out of chrome-alloy steel with a long-lasting powder-coat finish for enhanced weather resistance. This upgraded locking mailbox by Mail Boss comes with an anti-pry latch to prevent others from getting into the box with a screwdriver or crowbar.

This mailbox has a swinging latch door at the rear, so retrieving letters and small parcels is a lot more convenient. As is typical with Mail Boss’ locking mailboxes, the 7526 is comes with all of the screws you need to mount it onto wooden or metal posts. Installation is straightforward, but you can always rely on the included paperwork to set it up correctly.

Mail Boss 7526 Mail Manager Street Safe Locking...
  • REAR LOCKING access door for safe retrieval of mail and parcels away from street traffic
  • INNOVATIVE baffle door accepts mail bundles and small packages allowing for true security to prevent phishing
  • BI-CAM anti-pry latch locking mechanism featuring a chrome-alloy tempered steel hook cam

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

8) Architectural Mailboxes 6200B-10

The USPS-approved 6200B-10 by Architectural Mailboxes might not look like much, but this unit is actually a lot more feature-packed and user-friendly than you might have thought. It measures 18 x 15 x 11.5 inches in size, has a 10.5 x 3.6-inch-wide door for letters and parcels, and a bottom swinging door for retrieving mail.

Both doors are fortified with rubber seals along the corners to prevent weather damage, as well as to prevent prying eyes from getting unauthorized glances at the contents. Made of heavy-duty 16 and 18-gauge galvanized steel, the 6200B-10 is designed to be your one and only locking mailbox for life.

Architectural Mailboxes 6200B-10 Oasis Classic...
  • Postmaster General approved and patented design allows delivery of mail bundles and small parcels - perfect...
  • Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for...
  • Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other...

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

7) Mail Boss 7207

The Mail Boss 7207, like other Mail Boss locking mailboxes, is a durable device that’s designed to keep the contents safe from both thieves and harsh weather conditions. The 53-pound, 21.5 x 12 x 16.5-inch mailbox can accept letters and boxes of up to 10.5 x 4.5 x 4.5 inches in size.

The 12-disc locking mechanism can be found on the bottom latch of the front panel, which pulls open after turning the key. The unit comes with a sliding bottom plate that fixes onto metal, brick, or wooden posts of nearly all sizes with weatherproof fasteners (included in the box).

Mail Boss 7207 Package Master Curbside Locking...
  • Your purchase includes One Mail Boss Package Master Curbside Locking Security Mailbox in White + Installation...
  • Mail Box dimensions – 21.5" D x 12" W x 16.5" H | Weight – 53 lbs. | Packages – 10.5” L x 3.5” –...
  • Stainless steel hinges and powder-coated finish for optimum weather resistance

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

6) Architectural Mailboxes 6900RZ

The 6900RZ locking mailbox is like no other. It’s an upright mailbox that sits on top of four casters, allowing for easy mobility on wooden decks and paved walkways, though you can just as easily fasten it down on concrete surfaces with bolts.

For those who frequently place orders on ecommerce platforms, this failproof locking mailbox is the perfect alternative to leaving your valuables on your doorstep for others to see and snatch away. The entire unit is made of cast aluminum and galvanized steel for weather resistance, shock absorbency, and durability. A rotating drum within the swinging door accepts larger parcels that drop safely into the lower compartment.

Architectural Mailboxes 6900RZ Elephantrunk Parcel...
  • Rotating drum design accepts large parcels
  • Retrieval door equipped with pry-resistant 3-point lock system with 2 keys
  • Bolts securely to the ground

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

5) Gibraltar Mailboxes Mailsafe Locking Mailbox

This medium-size locking mailbox by Gibraltar offers a surprising 1,450 cubic inches of interior space for letters and small parcels.

Gibraltar Mailboxes Mailsafe
Gibraltar Mailboxes Mailsafe

The mail slot measures 10 inches by 1.75 inches to accommodate large envelopes, and the mailbox comes completely assembled and ready for attachment to a separate mounting plate.

On the inside of the magnetic-latch door, there is a clip for outgoing mail. For durability and rust resistance, the galvanized-steel Mailsafe Locking Mailbox is covered in polypropylene plastic and coated with an ultra-violet inhibitor. With this mailbox, you get two keys that fit the ultra-secure cam lock.

Gibraltar Mailboxes Mailsafe Large Capacity...
  • Large size capacity provides abundant space for multiple parcels
  • Rust-Proof plastic construction is highly durable providing strength and stability
  • Ultra-Violet inhibitor finish prevents color damage from the sun

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

4) Mail Boss 7500 Locking Mailbox

Easy for you to access but hard for would-be thieves to infiltrate. The extra-large Mail Boss 7500 features a sliding tray and an interior mail clip for mail organization. With its 1,760-cubic-inch capacity, there is enough room for a week’s worth of mail.

Mail Boss 7500
Mail Boss 7500 Manager Pro Curbside Security

There are three keys that wafer lock, and the latch is pick-safe. The powder-coated galvanized steel locking mailbox boasts a baffled door that prevents theft of small packages. All the hardware you need for fast installation is included. Plus, the Fast-Trak Mounting Plate fits a variety of posts.

Mail Boss 7500 Manager Pro Curbside Security,...
  • USPS approved full service curbside locking mailbox for residential use, secures your mail and helps prevent...
  • Heavy duty 14- and 16-gauge electro galvanized welded steel construction with durable powder-coated finish...
  • Innovative baffle door design allows for delivery of small packages and parcels but prevents fishing

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

3) Architectural Mailboxes 6200B-10 Locking Mailbox

Do you get packages delivered regularly? The Oasis Classic’s 2,256-cubic-inch capacity can handle it.

Architectural Mailboxes 6200B-10
Architectural Mailboxes 6200B-10

This high-gauge galvanized-steel locking mailbox features a sizable lower package compartment with an internal baffle and Weather-Tite seals that prevents rain seepage. Behind the hopper door, there is an outgoing mail clip.

Its powder-coated finish will keep the mailbox looking sharp for years to come. The cam lock and the hardware are made of anti-corrosive materials like stainless steel and zinc. Architectural Mailboxes drills the installation holes for you, and the company provides one key and a spare.

Architectural Mailboxes 6200B-10 Oasis Classic...
  • Postmaster General approved and patented design allows delivery of mail bundles and small parcels - perfect...
  • Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for...
  • Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other...

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

2) Mail Boss 7506 Mail Locking Mailbox

Mail Boss makes our top-five list twice with the 7506 Locking Mailbox, partly due to its commercial-grade wafer lock and hard-to-pry locking mechanism.

Mail Boss 7506
Mail Boss 7506

Stainless-steel hinges won’t rust over time, the electro-galvanized steel body is thick and strong, and the neodymium magnets are strong enough to keep the rain out.

The 7506 offers 1,760 cubic inches of interior space for small packages and letter bundles. An outgoing mail clip is concealed by a baffled door that prevents thieves from reaching inside of the mailbox. Mail Boss gives you all the installation hardware you need as well as one key and two extras.

Mail Boss 7506 Mail Manager Curbside Locking...
  • USPS Approved full-service residential locking security mailbox prevents mail-identity theft; Stainless steel...
  • QUALITY: 14- and 16-gauge galvanized welded steel construction defends against vandalism
  • SECURITY: Innovative baffle door accepts small parcels, packages, and a box of checks and also deters fishing....

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

1) Mail Boss 7106 Curbside Security Locking Mailbox

You’ll be pleased by the Mail Boss 7106‘s capacity. With a wide mail slot and an interior space of 2,375 cubic inches, the locking mailbox can easily hold a box of checks or a stack of magazines. The powder-coated galvanized steel mailbox housing is rated at a 14-gauge thickness to prevent damage from vandalism; its lock and latch are difficult to pry open.

Mail Boss 7106
Mail Boss 7106

The 12-gauge door is equipped with stainless-steel hinges, and the Fast-Trak Mounting Plate reduces installation time.

After you use the included bolts and drill bolt to install the locking mailbox, you can adhere the reflective house numbers that Mail Boss gives you and hand out the two spare keys to other family members.

Mail Boss 7106 Curbside Security Locking Mailbox,...
  • Large capacity USPS approved high security locking curbside mailbox made of 12- and 14-gauge electro...
  • Patented anti-pry latch locking mechanism and 12-wafer disc lock to prevent leveraged entry
  • Patented Fast-Trak Mounting Plate for easy installation on existing posts in minutes

Last update on 2021-12-04 / Affiliate links / Images from Amazon Product Advertising API

Mail Boss Mailbox Comparison

Mail Boss750671067207
ModelMail Manager CurbsideMail Boss CurbsidePackage Master Curbside
Vandal Resistant Construction23 lbs of 2.0mm & 1.5mm 14 & 16 gauge galvanized welded steel.40 lbs of 2.5mm & 2.0mm 12 & 14 gauge galvanized welded steel.53 lbs of 2.5mm & 2.0mm 12 & 14 gauge galvanized welded steel.
UsesSecure and affordable curbside box accepts packages up to 3.5"h x 10.2"w and can accept mail bundles, books, prescription medications, magazines and checks. Innovative baffle door deters both hand & tool fishing.The original and popular residential curbside locking mailbox, accepts packages up to 1.9"h x 10.25"w and accepts mail bundles, books, prescription medications, magazines and checks. Incoming mail slot deters fishing by hand.Our largest residential mail box, ideal for commercial use, and bulk mail deliveries. Accepts legal size envelopes and packages up to 4.5"h x 4.5"w x 10.5”l. Mail shield prevents both hand & tool fishing while allowing for large deliveries.
Mail Storage Capacity3-7 days.1-2 weeks.7-10 days.
InstallationUniversal hole pattern for multipe mounting applications.Fast-Trak mounting plate installs easily on posts, planks, or platforms in minutes.Fast-Trak mounting plate installs easily on posts, planks, or platforms in minutes.
FeaturesHeavy duty galvanized steel with stainless steel hinges, high security anti-pick lock, 3 laser cut keys, installation hardware, plastic floor liner.Heavy duty galvanized steel with stainless steel hinges, high security anti-pick lock, 3 laser cut keys, installation hardware, reflective house numbers.Heavy duty galvanized steel with stainless steel hinges, high security anti-pick lock, 3 laser cut keys, installation hardware, reflective house numbers, plastic floor liner.
Mounting ApplicationsCapable of being mounted within a brick column, or post mounted individually or in a cluster with the use of a 2 box, 3 box, or 4 mailbox spreader bar.Capable of being mounted within a brick column, or post mounted individually or in a cluster with the use of a 2 box, 3 box, or 4 mailbox spreader bar.Capable of being mounted within a brick column, or post mounted individually or in a cluster with the use of a 2 box, 3 box, or 4 mailbox spreader bar.
PriceCheck priceCheck priceCheck price

Locking Mailbox Buyer’s Guide

Don’t get overwhelmed by all the locking mailbox choices. Use our simple guide to find the one that suits the volume of mail you typically receive and your security needs.

Interior Space

Every locking mailbox differs in terms of the amount of interior space it has. If you receive medication or a lot of magazines in the mail, shoot for a locking mailbox with over 2,000 cubic inches of interior space.

An extra-large mailbox is also worth buying if you go on a lot of vacations as a big mailbox can hold up to 2 weeks’ worth of mail.

Locks and Security Features

Obviously, you want a secure lock on your mailbox. Look for one with a cam lock or a wafer lock, both of which are hard for thieves to pick. As far as ease of use goes, wafer locks are less likely to jam. A strong latch and a baffle door will prevent people from breaking into the mailbox too.

Materials

You want your locking mailbox to last for a long time, so the materials it’s made of matters. Galvanized steel is extremely strong, and it resists dents caused by vandals. However, the steel should have a 12-gauge or higher thickness. A powder-coated finish also helps as it prevents scratches and chips.

Weather Protection

This goes hand in hand with the materials used to construct the locking mailbox. Some manufacturers add a polypropylene plastic shell to their steel mailboxes, which stops rust from forming.

Finishes that deflect UV rays slow down the fading effects of the sun. Rubber seals and magnetic mechanisms on the door ensure that the rain stays out of the locking mailbox.

FAQs

What U.S. Postal Service Regulations Must I Follow?

As you know, a mailbox must meet the guidelines set by the USPS, or the postal worker can refuse to deliver mail to it. Post-mounted, or curbside, mailboxes should be placed 6 to 8 inches from the curb.

Per the Federal Highway Administration, the USPS also recommends that homeowners use a 4-by-4-inch or a 2-inch-diameter post buried 24 inches into the ground.

To receive mail in a locking mailbox, the mail slot should measure 7 inches long and 1.5 inches high [1]. However, an envelope sent via Priority Mail requires a mail slot of 10 inches long. Otherwise, the postal worker will have to bend it.

How Does the Postal Worker Put Mail in a Locking Mailbox?

On residential locking mailboxes, there is a drop slot in the front of the mailbox. When the postal worker delivers letters, envelopes and extremely small packages, he will simply slip them into that slot.

There are also locking mailboxes that have a hopper to accommodate somewhat larger packages.

The backside of these mailboxes has a door that you unlock with a key, so you can grab your mail. Usually, the postal worker will leave packages that he can’t fit into the slot or hopper at your front door.

Will the Postal Worker Need a Key?

No. For individual residential locking mailboxes, you don’t have to give your mail carrier a key. The only type of locking mailbox that the postal worker must have a key for is a cluster mailbox, but cluster mailboxes are only used for apartments and townhouses.

Where Can I Get Extra Keys?

It depends on the lock. Some key blanks can be found at your local hardware store or locksmith shop. Most often, key blanks for locking mailboxes aren’t available in stores. Instead, you’ll have to order them from the mailbox’s manufacturer or a participating retailer.

Once you receive the blanks, you can take them along with your original key to a locksmith to have them cut.

Ground Mount Versus Stand Mount – What’s the Difference?

Ground-mount and stand-mount posts are two types of posts used with curbside mailboxes. Ground-mount, or in-ground, posts are about 43 inches long, and they are buried in the ground.

Stand-mount, or surface-mount, posts are approximately 28 inches long. Stand-mount posts are attached to a flat base that is meant to be bolted to a concrete or cement slab.

Can I Use My Existing Post With My New Locking Mailbox?

Whether you use your old post or buy a new post depends on the existing post itself. As long as your post shows no signs of breakage or corrosion and it meets the USPS’ placement guidelines, you can certainly use the mailbox post already in place.

Many locking mailboxes come with a mounting plate. Some mounting plates are universal while others are made to fit the mailbox manufacturer’s line of posts. If the locking mailbox you choose lacks a mounting plate or doesn’t come with a universal mounting plate and you want to use your existing post, there are inexpensive universal mounting plates you can buy.

Can I Paint My Locking Mailbox?

You sure can! If you want to change the look of your mailbox, painting it a different color is a great way to do it. Before you paint the mailbox, remove the street number decals and cover the flag. Wash the mailbox and wipe it with rubbing alcohol.

Once the mailbox is dry, apply a primer, following the primer’s instruction. Then, paint the mailbox the color of your choice. Be aware that painting your mailbox may void the warranty.

Related Locking Mailbox Articles

Buying Guides
Best Locking Mailboxes

Comparison Articles
Mail Boss 7506 vs 7106
Mail Boss 7162 vs Mail Boss 7172

Info Articles
How Does a Locking Mailbox Work?

How Do I Maintain My Locking Mailbox?

Curbside mailboxes are designed to withstand harsh weather elements. Despite their durability, you should still clean your mailbox periodically to keep the mailbox looking its best. With the change of each season, wipe down the surface with a soapy cloth.

As your cleaning the mailbox, give it a once-over. If the numbers are faded, replace them (decals are super cheap). Tighten and oil the hinges of the access door, and make sure there isn’t any foliage blocking the mailbox.


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About the author

Hi I’m Alexander, founder of HouseholdMe.com and I’d like to say thank you for dropping by. Like most of you, the first thing I look at before buying something online is reviews or buying guides. By reading what other people say will help me gauge whether or not a product is good or not.  I am trying to help people find answers, solve problems, and get inspired.

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