Contact us if you have questions that aren’t answered below


Does a mail carrier need a key for a fort knox mailbox?

No. For single individual mailboxes a postal carrier will not carry a key.

If there is no key for the mail carrier, then how does he/she get into the standard fort knox mailbox?

Entry for the mail carrier on the standard mailbox is by tossing the mail into the top incoming mail slot. The mail then drops down into the locked compartment where only you can remove your mail.

Outgoing Mail or Door Questions

How about entry into the larger mailboxes?

Entry for the mail carrier on the larger mailboxes is simply by opening the top unlocked door and tossing your mail into the incoming mail slot just like the smaller mailbox. The mail then drops down into the locked compartment.

How about if I want to send outgoing mail from the standard mailbox?

When this option is added, outgoing mail is placed in the standard mailbox between the top incoming shelf and the locked door below. You can fit about 2-4 average letters there. Outgoing mail must slightly stick out of the mailbox. Be aware that the outgoing mail can not be locked with this setup.

How about sending outgoing mail on the larger mailboxes?

Sending outgoing mail in all the larger mailboxes (fortress, vacationer, and senator) is simplified with a special compartment behind the top, unlocked door. This door also covers the incoming slot, keeping mail “out of sight, out of mind”. Plus it keeps the mail out of the weather as well.

My outgoing mail is not locked up?

No, your outgoing mail is not locked up by postal standards. Remember, mail carriers will not carry a key. Outgoing mail is optional, but we suggest you take important outgoing mail directly do a post office or locked postal box. Incoming mail will always be safe and secure. (credit card statements, checks, insurance forms, etc.)

How do I get packages locked up?

Our popular slam-lock can be added to any of our mailboxes, and is included on some models (senator and package box). If you receive several packages through the mail, then we suggest adding the popular slam-lock. Here is how this lock works: when you open the mailbox with your key, and remove the mail from the mailbox, you will leave the door slightly ajar. The mailbox will appear to be locked, and will have no mail inside. The door is then ready for the mail carrier to open using the included knob. The mail carrier places your mail and packages inside of the mailbox and then shuts the door and it automatically locks. You will come with a key to get your mail out. If you are gone several days, the mail carrier will still have access to the top slot to deliver your mail. The package box does not come standard with a slot, but can be added.

My street is very busy, so is it possible to get a rear access door on a fort knox mailbox?

Yes, you can have a rear locking door added to all fort knox mailboxes so that you can access it from the back of the mailbox, and still have access to the front as well. Rear access is available on all post mounted fort knox mailboxes. We do charge $68 for this special order with three different options. See rear door options when ordering.


What are these fort knox mailboxes made of?

1/4″ steel is what they are made of. Most skyscrapers and bridges are made of the same material. Now it’s used for making the strongest mailbox on the market today. Check out this page by clicking here on how durable our mailboxes really are. The M1-LT is made out of 1/8″ steel (11 gauge).

1/4″ steel…. Is it necessary to be that strong?

Yes, by working with these mailboxes for over 20 years now, we have replaced many other mailboxes that claimed to be indestructible. Still there are no reports of a fort knox mailbox being damaged beyond repair. All mailboxes installed are still up and running to this date.

1/8″ steel…. Is it strong enough with the M1-LT mailbox?

All fort knox mailboxes except for the M1-LT mailbox are 1/4″ steel. We believe 1/4″ steel is the way to go to defend your mail. Sometimes that isn’t needed in certain situations. 1/8″ steel is still thicker than anything you can get at a hardware store. With the design of the mailbox, it will certainly keep your mail safe from most attempts of break-ins.

Your mailbox is welded, and not riveted? How is that any better?

All fort knox mailboxes are welded, no rivets. Welding actually bonds the two metals together while riveted boxes are held together by just the rivets. The seam on a riveted box can be a potential entry for thieves.

What is powder coating? And how is that better than paint?

You should search out how powder coating is better than paint for the environment. There are many more advantages, and we then take it a step higher. We not only use a high performance powder coating, but we also double coat all of our products.


What’s the best way to install a fort knox mailbox?

View a diagram for installing a Fort Knox mailbox. We see this as the best way of installing. Tools and materials needed:

  • Post hole digger
  • Shovel
  • Level
  • Tape measure
  • (2) 60 lb. bags of concrete
  • Everything for mixing the concrete (container, water, etc)
  • The mailbox w/ post and bolts and wrench (hardware included with post purchase)
  • A strong back, or some help! (mailboxes weigh anywhere from 38 lbs. – 300+ lbs.)
My mailbox needs to be installed in a cement sidewalk. Can you install my mailbox this way?

Yes, we can if you are in our installation area. If we are doing the install, we do charge $30 extra for this type of install. If you are doing the install then it could be difficult without the right tools. We suggest you use a cement cutting saw and even a jack hammer. You will cut through the cement and install the post in dirt through the sidewalk and pour in the new concrete mix after you have put in the new post. Another option is to let us know the height of the post you need and we can get you a breakaway (surface mount) post. Recommended height is 41″-48″ from the road surface to the top of the mailbox. Let us know if you are on a curb with a sidewalk, or if you are ground level. We can then determine the proper post height needed.

I want to bolt my mailbox post to a cement slab. Is there a possibility for getting a break away (surface mounty) post?

Yes. See the previous question. Let us know the height you prefer and we can make it accordingly. The standard height for a break away post is 36″, but we like to be even more accurate. Depending on the size of mailbox you have and if you are ground level or up on a curb will help us determine the best height. We want to make sure your post is at the proper usps required height.

Can these fort knox mailboxes be installed in brick, stone, or concrete?

Yes, many of our mailboxes have been installed in many encasements. Special orders have been made to install in a fence with rear retrieval. Many special orders have been used, but for brick, stone, you can install them as is. Some will ask for the flag separate in order to place it in the brick column. Let us know what type of install you are looking to do, and we can offer some assistance.


Are the posts included in the price of the mailbox?

No, the price does not include the steel post. You can order the mailbox with or without a post.

What are the posts made of?

To begin with, the posts are different between the M1-LT mailbox, the small standard mailbox, and all the other larger mailboxes. The only difference is the width of the post. (2.5″ x 2.5″ for the M1-LT mailbox, 4″ x 4″ for the small standard mailbox, and 5″ x 5″ for the larger mailboxes) mainly just for looks, but both offer the same strength. They are all made of the same 1/8″ steel square tubing. They then have a welded plate for mounting the Fort Knox Mailbox which is then fastened with carriage bolts on top of the post.


How do I order a fort knox mailbox?

You can order online or give us a call. On our website, you will see an “add to cart” button, and it will take you to an ordering page. Another option is to e-mail us at and give us your order that way. (no credit card numbers over e-mail please).

Can I get a discount if I order more than one mailbox?


Our multiple discounts are as follows:

5% off of 2-3 mailboxes

10% off of 4-10 mailboxes

15% off of 11-15 mailboxes

20% off of 16-20 mailboxes

Increased discounts for 21+

Please email us with any questions on discounts:

*Note, no discounts apply to T-Posts or Racks.

Your prices seem a little higher than other locking mailboxes. How come?

Our mailboxes are not your average locking mailboxes!  We use incredibly thick steel, the most secure parts, hinges, hardware, and locks.  We also hand-make our mailboxes right here in the USA.  They are not mass produced.  Each one receives a lot of time and attention.

Over time, we guarantee you will save money with a Fort Knox Mailbox!  USPS postal boxes require an annual payment, and cheap locking mailboxes get broken into.

What options do I have for paying?

We accept Visa, Master Card, Discover, and American Express.

We also accept checks.

Payment must be made before product can ship.

Do you have any distributors from where I can buy direct?

Yes, we do! Please call or E-MAIL us for possible dealers in your area.

Can I get another color besides the two color options you have?

We love doing custom colors!  You may check out our custom colors here:

Custom colors are $150, no matter how many items you purchase.

Disclaimer:  Color can vary between computer monitors to actual product.  Color can also vary between indoors and outside in the sunshine.

Select your RAL color code and we will order the powder that you request!

Can you put street numbers and addresses on the mailboxes?

Yes!  Each mailbox comes with a free address number on the front door.  We will affix this, unless you request it sent loose.

Side address numbers and/or street name are also available for an additional charge.

We have a bright white vinyl or a silver, reflective vinyl.


After ordering, how long will it take till I get a mailbox?

If we have your order in stock, it will ship within 1-2 business days.  If we do not have your order in stock, we will ship ASAP.  Lead times vary, depending on the order, custom work, etc.  Please feel free to contact us if you’d like a lead time.  1-800-206-8067.

How do you ship?

We ship via UPS Ground for most of our mailboxes.  Some of our bigger products, or multiple orders, will ship via LTL Freight.  Feel free to reach out to us for a shipping price quote.

Other Questions

What if my mailbox is damaged, and needs repairs?

Unfortunately, accidents happen, and also vandals can do the unthinkable. Our mailboxes can take a great deal of punishment, but the best coating available on these mailboxes can be damaged with the proper beating. Gratefully, we have a paint that matches our powder coating standard colors for a quick fix to keep your mailbox looking good again. Check out our paint options here for more information.

I would like to be a distributor of your mailbox. How can I do so?

We love our distributors!

Please contact us by email:

Where are you located?

Grants Pass, OR USA

Are your mailboxes Post Master General approved?

The Large Standard and the Fortress Mailboxes are USPS Postmaster General Approved.  These two  will arrive with a sticker stating the approval.

Our mailboxes meet postal regulations, but the others have not gone through the USPS testing for locking mailboxes.

We offer a guarantee of mail carrier delivery to all of our mailboxes, or you will receive a full refund.