The 7 Best Mailbox Post arms (2023 reviews)

We consider a mailbox post arm to be a worthy investment in the long run. We are here to help you choose the right one for your purposes from all the best available products in market today.

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Our Top Picks:

Best Overall: Buy: Zippity outdoor Products Mailbox Post arm READ REVIEW

Best For Wood Post: Buy: Custompak Mounting Plate READ REVIEW

Best For Large Size Mailbox: Buy: Gibraltar Mailboxes Mailbox Post arm READ REVIEW

Best With newspaper holder: Buy: Salsbury Industries Mailbox Post arm READ REVIEW

Best With Lego house: Buy: Custompak Mailbox Post arm READ REVIEW

Best With concrete: Buy: Architectural Mailboxes Mailbox Post arm READ REVIEW

Best double Mailbox Post: Buy: Mayne Mailbox Post arm READ REVIEW

Best Overall: Zippity outdoor Products Mailbox Post arm

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The zippity outdoor products mailbox post arm should be able to handle its purpose and duties with ease. This kit is straightforward and fairly easy to set up. It comes with screws that secure the mail post to the interior mounting pole. It works in sandy soil to add to that that does look like vinyl. It comes with a steel no-dig pipe anchor to make installation easy and clean. It is white pvc type material, won't rust or peel.

The material is heavy duty and high quality like vinyl fence post. It’s made for any standard mailbox. It’s free standing and ours has a metal post to go into a long part to stabilize. The style is modern and clean which fits in any environment and most likely will stand out in your neighborhood.

• Decorative and will last a long time
• Easy to install, looks good, with some caveats
• Impressive, sturdy, works in sandy soil

Best For Wood Post: Custompak Mounting Plate

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Next on the list, we've got yet another arm that manages to win our hearts. It's the custompak mounting plate and it's widely considered as arm that has the most suitable features. This mailbox post comes pre-assembled, easily for you to slide over your 4 x 4 post. It is made with high density polyethylene. It can be painted, but it looks so good how it comes. It is easy to install and looks so much better than a wooden post. There are wood screws that ship with this pre-assembled post cover, for fastening to the wood post.

This post set ships complete with a Universal Mounting Plate. It’s very durable/think material, all one piece. The mailbox is so easy to install, less than 30 minutes to put up.

• Assembled for ease of simplicity of installment
• Solid, elegant post and easy installation
• New and hot release

Best For Large Size Mailbox: Gibraltar Mailboxes Mailbox Post arm

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The gibraltar mailboxes mailbox post arm is capable of outshining several other arm featured in this list in overall features for the price point. It's the simple things of home ownership that make you happy. It's simple, inexpensive and functional. It has brackets with holes in them to adjust for different size mailboxes. The portion where the box sits, can easily be adjusted to handle a larger mailbox. It is made with heavy-duty galvanized steel to provide a strong foundation for your mailbox. It is guaranteed never to rust because it is made from polypropylene plastic, while an ultraviolet inhibitor provides protection from weathering.

The post is strong, but comes in to parts and the lower part have to be driven into the ground. The post is wobbly on the post but could be more secure if the box could be moved back to be fastened to the post itself. All mounting hardware is included for your convenience, and it can be installed directly in the ground without the need of digging or use of concrete.

• Easy to install even in hard clay soil
• Coated finish that offers the utmost in durability and good looks
• Resistant steel post and crossarm feature a black powder
• Looks really nice and is quite sturdy

Best With newspaper holder: Salsbury Industries Mailbox Post arm

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate arm. The salsbury industries mailbox post arm is exactly that - it's a simple arm that hits all the right notes. This mailbox post does not require a "separate" in-ground post that the "visible" post slides over. It can accommodate (2) salisbury rural or townhouse mailboxes. It is designed for two boxes-one on each side of the centerpost. It is very easy to assemble and is extremely sturdy. This is specifically for two to be mounted. It can be turned toward the street side-by-side. This is a high quality post made of heavy gauge materials. This post is made with heavy duty materials and is easy to assemble.

• Great sturdy yet lightweight mailbox post
• Made like all salisbury products,rock solid
• Easy assembly and refreshing to see an item this well made

Best With Lego house: Custompak Mailbox Post arm

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The custompak mailbox post arm should be able to handle its purpose and duties with ease. The pvc fence post will last a lot longer than wood. It's made from wood no larger than 4 inches high by 4 inches wide. If you can screw into both sides it will be better secured and more aesthetically pleasing. It also has a very nice looking appearance.

This post fits snugly onto the wooden post underneath it for extra sturdiness. It's easy to assemble and recommended. It's a good imitation wood and stone for much cheaper than the real thing. It's made with high density polyethylene.

• Great look and stands out compared to same boring mailboxes all around
• Assembled and will look great in any neighborhood
• New and hot release

Best With concrete: Architectural Mailboxes Mailbox Post arm

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Architectural Mailboxes line of arm come in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. A decorative, residential mailbox is the ultimate way to enhance the exterior of a home. The Hamilton decorative ground post can support most mailboxes weighing up to 50 lbs. It is made from cast aluminum, galvanized steel and then fully powder coated for added durability and corrosion resistance.

This post offers a beautiful design with highly functional elements such as a telescoping arm that can be raised and lowered and also rotated 360 degrees. The two pieces need to lock together tightly to stand upright and support a heavy mailbox. It includes installation instructions and assembly hardware. It includes mounting hardware plus the hamilton post arm also has an option for a 11.25 inch side mounting holes.

• Easy to install and very sturdy
• Two piece install and requires extra work to make stable
• Constructed of steel, abs and cast aluminum parts for longevity

Best double Mailbox Post: Mayne Mailbox Post arm

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The mayne mailbox post arm's high-end materials makes sure that it ages well with use. This post will come with all the necessary hardware to mount the mailbox support bracket to the post itself. It's made from high quality 100% polyethylene with built in uv inhibitors for long lasting protection from the elements. The material is hard plastic & slides over the 4X. It is easy to install and looks amazing.

These posts are resistant to high impact, chemicals and extreme weather conditions. It's a very subtle color, but it looks very nice and sturdy. This ensures that your product doesn't fade, preserves its color and increases its overall lifespan.

• Looks great installed & hold up to weather
• Ideal for sharing, or multi-family units
• Good investment for long term