Ultimate Review Of Best Replacement Mailbox Flags In 2023

replacement mailbox flag

A replacement mailbox flag designed to replace a worn-out or damaged mailbox flag.

It’s always a good idea to have your mailbox flag replaced because some carriers won’t know whether there’s a mail to pick if you’ve not erected one.

Mailbox flags are meant to be used by you and your postal delivery person; a mailbox flag signals that something is inside, and it either needs to be picked you or your carrier.

If you’ve been thinking of picking a mailbox replacement flag, you probably have realized that there’re a ton of options in the market.

The replacement flags are available in a variety of designs, hues, and colors, making the process of selecting the best flag challenging at the very least.

Be as it may, the best replacement mailbox flag should have three critical components, and they're:

  • Weather-resistance
  • Conspicuous color
  • Easy installation

We’ve scoured through the internet to bring you a comprehensive review of the top 6 replacement mailbox flags in the market.

Quick Comparison Table & Our Pick!

This as you would expect from us is an EPIC post so grab a coffee before you start  and see how we cut through every product and review it with precision. IF YOU ARE SHORT ON TIME and just need to know the results of our reviews , CHECK THE RESULTS TABLE BELOW!


Weight (Pounds)




12.0 x 6.0 x 2.0


2.6 x 4.2 x 10.2


2.5 x 1.5 x 6.0

Other Great Recommendations


6.0 x 4.0x 0.8


11.0 x 4.0 x 0.8 


2.6 x 4.2 x 10.2

The Best Replacement Mailbox Flags In The Market For The Money

mailbox flag ultimate with woman

Gibraltar RFL10000 Mailboxes- Editor’s Choice

The Gibraltar RFL10000 is a simple way to upgrade a damaged or a worn-out mailbox flag.

RFL10000 is well-built and is designed from durable and rust-proof plastic. So, you can use these flags for a long period without signs of wear.

An inexpensive option, it is among the budget-friendly mailbox kits we've in the market.

Sporting a bright red colour, the Gibraltar  is a candy to the eye and will fit with nearly all the mailboxes.

Gibraltar RFL10000 Mailboxes

More importantly, the red colour is visible and will easily attract your attention and that of your carrier.

Weighing 0.3 ounces and measuring 12” x 6” x 2”, the RFL10000 flag comes with the standard approved length for a mailbox signal arm. And so, this mailbox replacement flag fits all the USPS approved mailboxes and will more than likely fit your mailbox too.

Overall RFL 10000 is an all-around kit that comes with a slew of components for easy installation. The Gibraltar RFL10000 complete package comes with a flag, bracket, and all the required assembly hardware.

The included manual  is easy to read and comes with easy to follow instructions. According to some users, they were able to replace their old flag within 5 minutes.

On the flip side, however, some users complained that the Gibraltar mailbox flag needed some modification before the flag would fit their box.

In my opinion, or at least what I think, the users might have used the replacement flag a non-standardized mailbox because the RFL10000 fits all the USPS approved mailboxes.


  • Easily noticeable
  • Easy to install
  • Durable


  • Needs modification to fit non-standardized mailboxes

Check Gibraltar RFL10000  Price On Amazon

DVault Heavy Duty Steel Mailbox Replacement Flag Kit - Best value

The DVault Replacement Flag Kit is well-built, sturdy, and durable.

It looks more like a traditional mailbox flag with a waving flag.

This flag is constructed from heavy-duty steel, and so it's durable and will stand up to whatever Mother Nature throws.

Further, the DVault Replacement Flag Kit features a double coating, which gives the flag a smooth and glossy feel.  We also believe that the double coating is put in place to prevent rusting and corrosion.

DVault Heavy Duty Steel Mailbox Replacement Flag Kit

In a nutshell, this product displays strength and an extended product lifetime.

Like the Gibraltar RFL10000 we reviewed above, the DVault Replacement Flag Kit comes with a striking red color, and this increases its visibility.

Also, with an estimated height of 6-7 inches, the Replacement Flag Kit is high enough for your carrier to notice it’s raised even when they are far.

Weighing one pound and with dimensions of 7.75"L x .75"W x 3.25" H, the Replacement Flag is a universal unit that will attach easily to most of the mailboxes.

And if you're wondering whether this mailbox can be attached to a brick mailbox, it can. However, the manufacturer has not included the hardware for mounting it on a brick mailbox, so you'll have to provide it.

The DVault Replacement Flag Kit is a complete package that comes with all the necessary tools for mounting. This unit comes complete with screws and other mounting hardware to allow easy and fast installation.

Also, it comes with an easy to read manual.


  • Visible
  • Good height
  • Sturdy construction


  • The flag symbol is small

Check DVault Replacement Flag Kit Price On Amazon

The Miles Kimball Review -  Best Budget

This incredible option from Mile Kimball is uniquely designed for sturdiness, easy to use, and practicality.

This replacement flag is constructed from both sturdy plastic and metal, making it durable equipment.

Mile Kimball

The Mile Kimball has a dimension of 2.5 x 1.5 x 6.8 inches and weighs 2.88 ounces. In particular, the 6 1/2" high spring ball captured our attention as it makes this flag visible. The yellow balls spring into a vertical position once the box is opened, letting you notice even from afar.

Though it is not a universal mailbox replacement flag, it will fit in a majority of the traditional and rural mailboxes.

We love that you don’t have to spend a lot of time installing this flag on your mailbox. If anything, the Mile Kimball will only require a few minutes of your time.


  • Visible yellow box
  • Requires a few minutes to install
  • Budget-friendly


  • Not deal for all mailboxes

Check Mile Kimball Price On Amazon

Mail Time! ® Yellow Mailbox - Best for Bread Loaf Mailboxes

Mail Time alert signal flag is well-designed and an incredible option for anyone looking for a smart-looking mailbox lag.

Ideal for long driveways, users love Mail Time because of its practicality and durability.

The product itself is quite sturdy as it is constructed from steel, and so, it’s durable and will serve you for an extended period.

Mail Time! ® Yellow Mailbox

The steel construction on the Mail Time is further bolstered with a yellow coating, and this gives this flag a glossy and smooth feel. The yellow coating has also been put in place to prevent instances of rusting or corrosion. And unlike a majority of the replacement flags, the yellow coating on Mail Time doesn’t seem to peel even after extended use.

Regarding visibility, the Mail Time doesn’t easily go unnoticed, thanks to the striking yellow color that will call you from miles away.

With a generous dimension of 6 x 4 x 0.8 inches, it’s easy to see whether the Mail Time is raised or lowered even from your door or window, especially considering that it has a solid block or square design.

Again, the dimensions of Mail Time allow you to fit this flag in virtually all sizes of mailboxes, including the "bread loaf" mailboxes.

Unlike other replacement flags, the Mail Time does not come with a pole or stem, and this might confuse you on how to raise it or lower it down. This unit, however, comes with a spring that rises when the mailbox is open. To lower it, you simply need to attach the spring on the sides with its lock.


  • Sturdy steel construction
  • The coating does not peel
  • Can be used on a variety of mailboxes


  • Limited placement option

Check Mail Time Price On Amazon

The Universal Mailbox Flag - Best for all Types of Mailboxes

Next in line is the Universal Mailbox Flag.

A top-rated mailbox replacement flag, the Universal ticks all the boxes for the best mailbox flag.

It is constructed from heavy-duty plastic for high strength and durability.

Unlike the typical flimsy plastic constructions, this Universal model is sturdy. What we like about the material is that it does not fade and will hold up to its structural integrity even after seasons of hot summers.

The Universal Mailbox Flag

Overall it is a highly versatile unit, and as its name suggests, it can be used on virtually any type of mailbox.

So, whether you're planning to replace a brick, plastic, or any other kind of mailbox, this mail replacement flag is a suitable option. In particular, the Universal Mailbox Flag comes with fasteners for wood, masonry, metal, and plastic attachment.

Now, despite its versatility, the Universal Box is intuitive and easy to install. If the reviews and our experience are anything to go by, you will have a pretty easy time mounting this flag on their mailboxes.

This flag measures 11 x 5 x 0.5 inches and weighs 3.2 ounces. If you include the bracket in which the flag is mounted, the total length shoots to 9 ½”.

The generous length, alongside the striking red color on the Universal Mail Box, increases the visibility of this unit and makes it easy to notice.

The Finger Grab is a quintessential asset on this flag, and it will protect your fingers when raising or lowering the flag.

In general, users of this mail replacement mailbox lag are happy with functionality and usefulness on this flag.


  • Can be mounted on any type of mailbox
  • Comes with mounting accessories
  • The finger grab will protect your fingers


  • Requires you to drill holes on some mailboxes

Check Universal Mailbox Flag Price On Amazon

Solar Group RF000R06 - Best Traditional Mailbox

The Solar Group RFOOORO6 is yet another product from Gibraltar Mailboxes and further underlines the superiority of the brand.

Similar to the Gibraltar RFL10000 we had reviewed earlier, the Solar Group RFOOORO6 comes with rugged durability and functionality.

Solar Group RF000R06

Again, like the DVault Heavy Duty Steel Mailbox, the Solar Group flag takes the form of a more traditional mailbox flag.

The difference with the latter is that this flag has a bigger dimension at 2.6 x 4.2 x 10.2 inches. In our opinion, or at least what we think, the 10 inches additional height on this unit gives it fairly good visibility.

The visibility of this unit is further underlined by the striking red color. Though the flag design and symbol are generally lower than most of the flags on our list, this product can be seen from a distance, and therefore quite effective in signaling to both the user as well as the postman.

For durability purposes, the Solar Group flag is constructed from aluminum. Aluminum is strong, and expectedly, this unit will serve you for long.

The aluminum on the Solar Group flag is coated with a smooth finish that buttresses the sturdiness of the flag and protects it against corrosion and rusting.

We were impressed by the simple and intuitive installation of this unit. The Solar Group flag will only require a few minutes to have it installed in your mailbox.


  • Visible
  • Anti-rust
  • Easy to install


  • The material looks a bit weak

Check Solar Group RFOOORO6 Price On Amazon

Best Replacement Mailbox Flag Buyer Guide

As you've already seen, mailboxes replacement flags are available in numerous dimensions, variety, sizes, and styles.

Now, if you're planning to purchase a replacement lag, there're several critical factors that you need to consider.  These factors are the main determinants of whether you'll get the best mail replacement mailbox that is suitable for your needs.


Mailbox flags are a standard part of the mailbox.

However, the flags do not come with a standard size or dimension, and some can be as high as seven inches.

So, size should be among the primary consideration when choosing a replacement mailbox flag.

Besides retrofitting, the overall size of selecting a replacement flag is also crucial as it can help at improving visibility.


Visibility is more than the size of your mailbox flag.

Sure, size does affect the visibility because the larger your flag, the more likely it is to get noticed.

However, there’re other elements that can help at improving the visibility of your flag.

This includes the color of your flag or even shape.

Striking colors such as yellow and red are more visually attracting and more likely to get your flag noticed.

Regarding shape, a flag with a ball or a rounded mount on top or a big square sheet, on the other hand, is equally going to get your flag more noticed.


A replacement flag is, in most cases, left outside, in the open air, where it's exposed to the various elements.

Therefore, the material of your flag is critical to its durability and longevity.

Ideally, you should have your replacement flag constructed from durable metals for the ultimate sturdiness. The metals should further be reinforced with a powdered coating on top for a smooth finish and to prevent rusting or corrosion.

Ease of Installation

While replacements are pretty easy compared to the actual installation, it's still valuable to have a replacement flag that is easier to install.

Who Can Use a Mailbox Replacement Flag?

A mailbox flag is suitable for those with an existing mailbox.

Having a replacement mailbox flag will help to secure the crucial documents by letting you or your postman know whether there’s something to be received or mail.

And to a certain extent, a replacement mailbox flag can help with easier navigation to your address.

Also, it can improve the overall aesthetics of your home, especially if you get the customized flags.


Now you have it; we’ve listed the top 6 replacement mailbox lags in the market.

Carefully go through the individual options above, and select one that you feel will fit your needs.


What are the mailboxes flags for?

Homeowners and entrepreneurs use mailbox flags to alert mail couriers of the presence of outgoing mail. If you raise the mailbox flag, the mail courier will know there is mail that they should collect. 

What should you do in case you don’t have a flag?

If you don’t have a flag, then the mail courier is not supposed to stop. The presence of a flag informs the mail courier that you have outgoing mail in your mailbox. If you don’t have a mailbox flag, you should work it out with your mail person. For instance, you can use a colored clip that the mail person can see from across the street. 

What does it mean when the mailbox flag is down?  

When the mailbox mail is raised, it means there is outgoing mail. After the postal carrier retrieves the mail and deposits an incoming mail, he/she will push the flag down.  

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