Success usually comes to those who are too busy to be looking for it.Henry David Thoreau

5 Best Locking Mailboxes

Most recommended
Package Master Curbside Locking Security
  • Color Name: Bronze
  • Item Weight 53 pounds
  • 21.5 x 12 x 16.5 inches
A good choice too
Architectural Mailboxes Oasis
  • Color Name: Black
  • Item Weight 15.8 pounds
  • 15.84 Inches
A good choice too
Mail Manager Street Safe Locking Security
  • Style: Rear Lockingk
  • Item Weight 26.2 poundsk
  • Color Black
Mail Boss Curbside Wood Grain
  • Color Name: Wood Grain
  • Item Weight 25 pounds
  • Color Wood Grain
Architectural Mailboxes 6400P-R-10
  • Item Weight 15.37 pounds
  • Color Pewter
  • Material Galvanized Steel

Choose the Best Locking Mailbox

Customer’s Choice: the Best Rated Locking Mailboxes

10 users answered this survey. Please help us improve this review!

50% of users selected Package Master Curbside Locking Security, 30% selected Architectural Mailboxes Oasis, 0% selected Mail Manager Street Safe Locking Security, 20% selected Mail Boss Curbside Wood Grain and 0% selected Architectural Mailboxes 6400P-R-10. Every month we analyze your answers and change our rating.

Do you feel like your mailbox is an easy target for thieves? You’re not alone. It’s a lot easier to steal the mail when it comes in through the front door than to break into an individual home. Even if you have a locking mailbox, there are still things that can be done to prevent theft. 

Reasons to invest in locking mailboxes:

  • Anonymity. You never know who might be reading your mail, and locking mailboxes ensure that only the intended recipient is able to read it without needing a key. This can also come in handy if you have children or pets at home, as they won’t be able to get into any of your personal correspondence. The best locking mailboxes offer an extra level of security by ensuring only the intended recipient has physical access to what’s inside;
  • Safety. If you have a locking mailbox, it will be so much harder for someone to rifle through your mail and take any valuable items that might not otherwise be well protected;
  • Protection against identity theft. As mentioned above, people can’t go snooping around in your correspondence with unlocked doors or bags without needing a key. This provides added protection from identity thieves who might want to steal sensitive information like bank account numbers, social insurance numbers, birthdays and other personal details;

In this guide, experts will go over some of the best locking mailboxes and how they work so you can choose what’s right for your situation.

Mail Boss 7208 Package Security Mailbox – the Editor’s choice!

The Mail Boss 7208 Package Security Mailbox is the perfect place for your family to let their packages collect safely. The steel exterior will ensure that it will not rust, break, or fade and with stainless steel hinges, you can be sure your mailbox door won’t tarnish over time either.

The patented anti-pry locking mechanism secures all of the contents inside so they are safe from thieves and nosy neighbors too. You’ll appreciate how sturdy this mailbox feels since it’s made from a 12-gauge electrogalvanized welded steel construction. This product is also fully capable of being mounted within a brick column, post-mounted as an individual, or in clusters with the use of spreader bars.


  • Made with steel and bronze;
  • Rust-resistant;
  • Anti-pry mechanism;
  • Includes installation hardware;
  • Sturdy;
  • Nice looking;


  • The paint may come off;
  • No warranty for the lock;
  • The incoming mail slot is too wide;

This mailbox has a patented design with an anti-pry mechanism and secure locking system that mounts within brick or post-mounted. With 10 different finishes available including bronze stainless steel, this is both stylish and rugged.

Architectural Mailboxes 6300B-10 Oasis 360 Locking Mailbox – the best for weather resistance!

With a powder-coated galvanized steel construction and a locking front door for added security, the Architectural Mailboxes 6300B-10 Oasis 360 mailbox can be perfect for any home. Get easy access to your parcels with dual doors and installation is quick and easy with the drilled mounting holes in the bottom of this mailbox.

Tips for users: with predrilled holes on the floor to mount it wherever you need it, this box also includes 4 inches x 10 inches.


  • Made with galvanized steel and aluminum;
  • Black finish;
  • Great locking system;
  • Corrosion-resistant;
  • Predrilled holes;
  • Large capacity;


  • Metal is too thin;
  • Doesn’t include the keys;

Made of aluminum, this black mailbox will be at home on any exterior design thanks to its classic yet sleek styling. The innovative lock has been tested against weather conditions so that it can keep your letters protected inside.

Mail Boss 7526 Mail Manager Locking Security Mailbox – the best for design!

The Mail Boss 7526 mailbox provides you with safe access and security for your mail. The locking door with baffle area can store both packages and just mail, making it easy for anyone in your home or office to pick up their daily deliveries at any time of day.

A bi-cam exterior latch guarantees secure storage on the inside where it locks up tight for ultimate protection.

The construction is durable and sturdy ensuring this isn’t going anywhere anytime soon but don’t worry because it has been approved by USPS, so you can keep getting your parcels and mail.


  • The design is approved by USPS;
  • Bi-cam anti-pry latch locking system;
  • Secure mail door;
  • Good for mail and packages;
  • 12-disc wafer lock;


  • The rear door issues may happen;
  • Dents are possible;

A Mail Boss 7526 Locking Security mailbox keeps your mail and packages safe from unwanted eyes. If you’re looking for a high quality, secure, reliable, durable product to replace your old mailbox then check this mailbox out.

Mail Boss Curbside 7510 Locking Security Mailbox – the best for style!

The MailBoss Curbside 7510 Locking Security Mailbox is made to the highest standards from electro-galvanized steel that not only looks great but provides your homeowners’ association with a strong and durable mailbox.

The mailbox has an innovative baffle door for packages, along with patented features such as a concealed outgoing mail clip and anti-pry latch locks for your letters! Made available in brushed ebony or white cedar finishes, this mailbox will withstand anything you throw at it–paper balls included.


  • Made with steel;
  • Woodgrain finish;
  • USPS-approved;
  • Includes concealed outgoing mail clip and 3 keys;
  • 12-disc wafer lock;


  • No compartment for small packages;
  • Long envelopes won’t fit;

With a twelve-disc wafer lock, three keys, and all necessary installation hardware included, this stylish mailbox is easy to set up and use immediately after receiving.

Architectural Mailboxes 6400P-R-10 Locking Mailbox – the best for easy installation!

With careful attention to detail, the Architectural Mailboxes 6400P-R-10 Locking Mailbox has been designed with a magnetic intake door closure. Two outgoing clips are hidden behind the hopper door to help it to accommodate the small items from 12.5 inches wide by 9.5 inches deep by 0.5 inches high.

It comes with an easy-to-navigate lock mechanism that locks securely with reinforced brackets ensuring it can’t be easily pried open. The mailbox folds flat and comes pre-assembled, so installation is quick and easy.

The pewter color is great for blending into the environment and will allow your mail to be housed in an attractive mailbox that’s easy to see from afar.


  • Made with galvanized steel;
  • Easy to install and clean;
  • Anti-fishing system;
  • Magnetic door closure;
  • Designed for small parcels and envelopes from 12.5 inches;


  • The bottom slot is vulnerable;
  • Powder coating may rust;

This metal mailbox has two outgoing mail clips discreetly hidden behind the hopper door as well as a magnetic intake door closure. It is reliable, stylish and easy to assemble.

The Buyer’s Guide

Security features and locks: 

  • The ideal locking mailbox should be UL-approved and have a key lock;
  • Most mailboxes come with either electronic or push button combination locks depending on the preference of the buyer. Pushbutton locks are generally the easiest to use, but they do make it easier for children or people with certain disabilities who might need help from someone else. The downside of this is that anyone without a key can usually still open the mailbox and retrieve mail when necessary – so keep an eye on your kids if you have small ones nearby;
  • Some high-quality models may even offer fingerprint scanners; these are not common, but they do exist as options in some products. In general, most consumers will want to opt for at least a standard push-button lock, preferably one that is easy enough to use without having to think about it too much (i.e., avoid making customers remember too many passwords). These can also be upgraded to include biometric readers for added security if desired;
  • Mailbox locks should always come with two keys – one for each family member who lives on the property; it’s important that both parties have access to putting mail into the box as well as retrieving items from inside without needing a key exchange every single day;
  • Some models have a built-in alarm system that alerts you if an intruder tries to open it even with the correct code. Others come equipped with motion detectors, which send out a signal when someone comes within proximity of the unit;

Weather protection

If you live in a rainy climate or area that sees high winds often, it’s important to know how weather-resistant the mailbox is. Most locking mailboxes are not designed for outdoor use and cannot withstand strong rainstorms. If your home gets heavy rainfall, make sure to purchase a waterproof locking mailbox. 

A durable aluminum exterior can also be an option if you do get some of these storms from time to time. The best thing about this material is its ability to endure extreme climates while still being easy on the eyes with any design color choice.

Materials used by the manufacturer

You’ll often find that the locking mailbox is constructed of steel or aluminum and coated in durable paint. These are both strong materials that have been tested for durability, weather resistance, corrosion protection and many other qualities to ensure they last through any kind of climate. A locking mailbox should be able to survive some harsh environments without rusting away completely.

The coating on these metal mailboxes provides them with an additional layer of protection from the elements while also giving them a very sleek appearance. You may choose between satin black, navy blue, white gloss or bronze among others depending on your preference as well as what will match best with your house’s exterior color palette.

This coating is typically applied using a powder coating process that can be done in the factory or by an outside company. This means that you should never need to worry about how well your mailbox will last! Even if it’s just for aesthetics, these are a great investment and worth every penny because all of those other mailboxes out there won’t last as long as steel or aluminum ones.

Dimensions and size

For an average mailbox, you might want to opt for at least 12 inches x 18 inches. This will allow plenty of storage space and shouldn’t be too big or bulky in the yard.

The size of a locking mailbox can range from small enough for one individual to carry around, all the way up to large enough for several people. Consider how big your workers are and what they’re doing with this box when it’s not in use (e.g., storing something inside or carrying items back and forth). 

The smaller mailboxes may have an easier time being carried by two individuals if necessary; but, the larger models might be perfect for storage as well as transport. When sizing a unit, measure both length and width at their widest point so that you get accurate measurements on interior volume space too.


Are locking mailboxes secure?

The short answer is yes. Locking mailboxes are more secure than standard ones in a variety of ways: 

  • Firstly, they’re easier to install and use, so less time is spent on the installation process;
  • Secondly, they have a higher level of tamper-resistance which means there’s an increased difficulty for someone trying to break into it with tools or by brute force (i.e., slamming their body against the door);
  • Thirdly, locking mailboxes can be installed at ground level instead of having to climb up a flight of stairs when using standard ones—meaning that even if you live in a multistory building like an apartment complex, your mailbox will still be easy enough to access without any climbing required;

Is a plastic or metal mailbox better?

Metal mailboxes are often more durable than plastic, and will not dent or scratch as easily. They also deter potential thieves because they can’t be cut through with a saw. Plastic is lighter – however, this can make it easier to steal the mailbox out of its foundation if you live in an area that sees hurricanes. 

Metal boxes tend to be heavier and may need reinforcement when installed on concrete surfaces. The weight difference between these two types might not matter so much for homeowners who have relatively short driveways where the mailbox is close enough to walk from your office door back home after retrieving your mail each day.

How does the postal worker put mail in a locking mailbox?

In order to deliver mail to a locking mailbox, the postal worker needs to have two keys: one for their locker and one that they can use on any of the other mailboxes. To complete this task, some USPS employees will carry around an extra set of double locks with them whenever they work in rural areas where there is no post office or drop box. 

They are also instructed not to unlock a locked mailbox without permission from its owner (such as if you need to change your address) but it’s still possible that somebody might be able to get inside somehow.

You can also buy a keyless locking mailbox that does not require any special keys. This is perfect for people who worry about the safety of their mail in rural areas, or if you want to make sure your mail doesn’t ever get into the wrong hands (such as when somebody moves away). The USPS recommends having at least two of these so that no matter what happens one will always be accessible.

Will the postal worker need a key?

Yes, the postman will need to use a key in order to open and close your mailbox. The lock ensures that only authorized people can get into it but also ensures you can access your mail as well.

How much does a locking mailbox cost?

The cost for locking mailboxes varies depending on the style, size and features. For example, a six-slot mailbox will typically be less expensive than an eight-slot mailbox. The type of material that is used to make the unit can also help determine its price tag; materials such as stainless steel are usually more costly because they require different fabrication processes and machinery in order to provide corrosion resistance with strength suitable for exterior use.

Typically, a locking mailbox costs between $150-$400. The most popular styles are typically priced higher due to their convenience such as double-walled or insulated varieties that keep outgoing letters protected from weather conditions like sun’s heat or precipitation during delivery.

Ground mount vs Stand mount mailboxes – what’s the difference?

Ground mount mailboxes are traditionally installed in the ground with a concrete base. They can be either flush to the ground or slightly elevated so the mail carrier does not have to step onto them when delivering mail.

Stand mount mailboxes are mounted on a post, which extends upward from its place of installation and attaches at an angle for easy access by postal carriers. This style may come as one piece or attachable pieces that allow it to sit atop posts ranging from six inches up to four feet high (or higher).

Can you use your existing post with your new locking mailbox?

Absolutely. The best locking mailboxes are designed to work with most standard or older posts on the market, so you don’t have to worry about buying an expensive post just for your new mailbox!

Most brands offer a wide variety of different kinds of locks and fittings, including those that can be attached to existing posts. Depending on what kind of lock you prefer, some types will be more appropriate than others will. However, there is definitely something available for every taste and budget in this guide.

Can you paint your locking mailbox?

Since locking mailboxes are not made to be painted, the answer is no. The paint will not adhere and it can damage your mailbox in other ways as well. If you want a different color for your new mailbox, then select one of these colors offered by the manufacturer. And in some neighborhoods, it can be prohibited to paint mailboxes.

In other cases, you can try painting your mailbox. A few considerations must be taken into account first: 

  • You will need to make sure the area is free of any flammable substances before painting. This includes anything from cigarettes and cooking oil to newspapers and dryer lint;
  • Make sure the space between door/flap openings does not fill with moisture or condensation as this could lead to water damage (especially in humid environments);
  • Fixing up an old mailbox may require some stripping down which means removing all coatings on metal including paint where applicable. If the surface appears contaminated at all then it might also be necessary for degreasing and washing off grease spots by applying solvents like acetone and cleaning agents like dish soap;
  • Painting a locking mailbox can be done with both oil-based or latex paint as long as the coat is allowed to dry properly before being exposed to rain, moisture, sleet, snow, etc.;
  • Make sure the surface you are painting on (mailbox) is clean first by removing any dirt particles or loose rust using steel wool for example – then lightly sand it down if necessary depending on the type of coating materials that were previously applied and finally prime it before applying any coats of paint that should always be in thin-to-medium thicknesses:

You should also prepare the mailbox by applying a coat or two of paint to it before you start painting. This will create an even surface and provide better coverage for your new color (the top is always good).

It is advisable to use latex paint as it will have a longer lifespan, but if you want an oil-based coat there are primers specifically for that and they can be applied directly over the old coating. Make sure to follow any manufacturer guidelines when doing this though – some may require sanding of the surface first or apply a layer of primer before proceeding with subsequent coats depending on what type of product was used originally.

How do you maintain your locking mailbox?

The best way to maintain your locking mailbox is by keeping it clean. Most mailboxes are made out of metal, so a good rule for cleaning them would be using steel wool and then applying some soap or degreaser onto the surface before scrubbing with water.

All you need to do is periodically clean out the inside of the container. You should also check on a monthly basis for any loose joints and tighten them up if necessary. If you have time, it can be helpful to occasionally spray down the outside with window cleaner or soap and water as well so that there’s no buildup from rain or snow. Locking mailboxes are designed in such a way where they don’t really require much maintenance at all.

Is it cheaper to rekey or replace locks?

The answer to this question can vary, but there are a few factors that can help you make the decision: 

  • Cost of locks – if your mailbox lock is expensive or unusual then it might be more cost-effective to replace the lock than rekey them. You should also consider potential installation costs as well when making a comparison between replacements and rekeying;
  • Mailbox use. If you have an infrequent mail user who may only need access occasionally during off hours then replacement locks will probably be sufficient for their needs since they won’t need to worry about being locked out while retrieving important correspondence from inside their house or business. However, if you live in an area where theft rates are high and you need to access your mailboxes frequently during the day then rekeying locks might be more cost-effective;
  • Preference. Rekeying is a cheaper alternative than replacement, but if it doesn’t align with your aesthetic preferences or requires installation work then replacing may suit you better. Remember that mailbox locks come in all shapes and sizes so there are plenty of options for whichever route you decide on;

What USPS regulations should you follow?

The USPS requires that the mailbox be at least five inches deep. Mailboxes must also have their locking device, separate from other locks on the door or gate to the residence or business that it serves. The lock shall not interfere with the delivery of mail and may be located either inside or outside of such a box. However, in rural areas where there is no scheduled delivery service (rural carrier) for a particular address classification, keys are available through postal officials to permit access by Rural Carriers delivering mail.

Useful Video: The Best Locking Mailbox on the Market by onza04

Final thoughts 

If you’re looking for a locking mailbox that will keep your mail secure, then look no further. Some of the best models on the market were included in this guide to help make this decision easier and more convenient.