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Internet # 100495680

Model # 581000000

Store SO SKU #1000698433

Dover Decorative Polyethylene Mailbox Post, White

$142.75
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  • Not included: Standard 4x4 post, mailbox, and mailbox mount
  • UV resistant polyethylene offers lasting protection and color
  • Fits standard 4x4 post, supporting mailboxes up to 12lbs
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Product Details

About This Product

Simple yet strong, the Dover Mail Post serves as a warm invitation to retrive your mail. This New England inspired mail post perfectly captures the timeless charm of the East Coast and easily installs over a standard 4x4 wood post. Constructed of durable polyethylene; this mail post is low-maintenance and resistant to extreme weather conditions. Its classic design resembles the look of wood, without the daunting upkeep of painting and staining that traditional wood posts require. The resin contains built-in UV inhibitors that reduce the damaging effects of the sun; this ensures that your product doesn't fade, preserves its color and increases its overall lifespan. The Dover Mail Post ships in 2 boxes; includes a decorative post, newspaper holder mailbox support arm, hardware kit, and instructions. 4x4 wood post, mailbox, and mailbox mounting hardware NOT included. Designed to support a mailbox weighing up to 12lbs.

Highlights

  • Made with 100% high-grade polyethylene resin with UV inhibitors to prevent fading and discoloration
  • Ships in 2 boxes (standard post sleeve MP5802 / single piece paper holder MP5810)
  • Supports any sized mailbox weighing up to 12 lbs.
  • Installs easily over a standard 4x4 wood post
  • 4x4 wood post, mailbox and mailbox mounting hardware not included
  • Proudly designed in Canada and made in the USA - Backed by a 15-year limited warranty
  • Assembled dimensions: 25.4 in. L x 8 in. W x 56.5 in. H
  • Return Policy

Product Information

Internet # 100495680

Model # 581000000

Store SO SKU #1000698433

Specifications

Dimensions: H 56.5 in, W 8 in, D 25.4 in

Dimensions

Product Depth (in.)

25.4 in

Product Height (in.)

56.5 in

Product Width (in.)

8 in

Details

Color

White

Features

Decorative, Fade Resistant

Hardware Color Family

White

Included

Newspaper Holders/Receptacles, Posts

Post Installation Type

Fits Over 4x4

Post Material

Vinyl

Product Weight (lb.)

12.5 lb

Returnable

90-Day

Weight Capacity (lb.)

12 lb

Warranty / Certifications

Manufacturer Warranty

Backed by a 15-year limited warranty

Questions & Answers

Will the Step2 Town to Town XL mailbox in black onyx match the Mayne Dover black post? It is slightly less than 11 pounds so believe it will work weight wise. Thank you.
ByJun 10, 2026
1 Answer | 
Answer This Question

Yeah Im sure this would look great!

By|Jun 12, 2026


    I currently have a post in ground @ 41 inches, is this too short or will it work?
    ByMar 16, 2026
    1 Answer | 
    Answer This Question

    We recommend a post 48" above ground, as this is the typical height for the arm to be properly anchored to the unit. You may be able to install the arm lower on the post, but I would recommend checking local by-laws for mailbox height requirements. We have some suggestions for securely extending the existing post, please reach out if you are interested! customerservice@gomayne.com -Kayla

    By|Mar 19, 2026


      Are you able to install numbers on the sides?
      ByAug 29, 2025
      1 Answer | 
      Answer This Question

      Hello Numbers! Yes, you are able to install numbers on the sides of the post. We hope this helps, have a great day!

      By|Sep 5, 2025


        I don't want to install the newspaper holder, do I need to still put it on?
        BySep 11, 2024
        1 Answer | 
        Answer This Question

        Hello, the newspaper holder arm is all one unit- so you don't need to install it but you would need another arm for the mailbox to sit on.

        By|Aug 22, 2026

          (1)

          With a lot of sun- does the grey color fade?
          ByJul 15, 2023
          1 Answer | 
          Answer This Question

          Our products are made from 100% high-quality polyethylene resin sourced from the United States and Canada. They have a built in UV inhibitor to prevent any fading.

          By|Feb 22, 2025

            (1)

            Can I use this post over an existing ?pipe? post? I?m trying to find a way to upgrade without ripping the current post out of the ground (which I?m sure has cement under it). I?m sure a wooden post is best but?
            ByJul 14, 2023
            1 Answer | 
            Answer This Question

            Yes, this item is meant to fit over a 4x4 wood post. The decorative sleeve requires 48" of the 4x4 to be exposed.

            By|Jun 21, 2026

              (2)

              My existing post outside dimensions are 5 1/2 X 5 1/2. Will it fit on this post?
              ByJun 3, 2023
              1 Answer | 
              Answer This Question

              Hi Manny, this post is designed to fit over a pressure treated 4x4 post (measures 3.5"x3.5") so will not fit over your existing 5.5"x5.5" post. The only mail post that we have available that will fit over a "6x6" post would be our Liberty Style, Mayne Part number 5805-B.

              By|Feb 1, 2024

                (1)

                Where can I get a light for the top of the post?
                ByAug 25, 2022
                1 Answer | 
                Answer This Question

                Thank you for reaching out Laurieann. We have a solar cap that you can find on the linked website by searching "Mayne Solar Cap' They are offered in black and white. If you have any questions or concerns please reach out to us directly at customerservice@gomayne.com

                By|Apr 25, 2026

                  (2)

                  Viewing 1-8 of 26

                  Customer Reviews

                  4.6 out of 5

                  • 4.6 out of 191 reviews
                  • 92% recommend this product
                  Filter by:
                  Showing 1-10 of 191 reviews
                  Amazing quality. Good directions and looks great. Took less than an hour to install. The postman like the convenience and the easy method of delivering mail from the truck
                  by
                  It seems to be a nice choice
                  It was somehow easy to assemble. However once I placed the mailbox on it for an assemble, it came out that I have to put and extension piece of wood under the mailbox and where it connects to the post. Some extra solutions are required but I could also directly screw the mail box to the post as well.
                  by
                    Solid and easy to mount. Looks great.
                    Solid and easy to mount. Looks great.
                    by
                    • Verified Purchase
                    • Recommended
                    This one is the second Dover Plastic Mailbox Post i have installed. The first one was at y work a...
                    This one is the second Dover Plastic Mailbox Post i have installed. The first one was at y work and this one was at my house. Looks good and easy to install.
                    by
                    • Verified Purchase
                    • Recommended
                    Really looks nice
                    Easy installation. Cut the old post leaving the 4 by 4. Slipped the main post over it and screwed on the mailbox and newspaper arm. Looks rich.
                    by
                    Response from Mayne Product ExpertMay 29, 2020
                    Thanks so much for the great review!
                      • Recommended
                      1 found this review helpful
                      Some minor issues with it. Some clean up needed around the "molding", but not uncommon in molded ...
                      Some minor issues with it. Some clean up needed around the "molding", but not uncommon in molded plastic. Overall, extremely happy with the purchase! With the new mailbox, post, and solar light...a major upgrade from what I had. I would strongly recommend this product to anyone looking to increase their curb appeal.
                      by
                      • Verified Purchase
                      • Recommended
                      very easy to assemble, post cover goes on 4" X 4" post hard, make sure you go on line and get the...
                      very easy to assemble, post cover goes on 4" X 4" post hard, make sure you go on line and get the proper height and set back measurements from the USPS before digging so that you can get the correct placement location, it will save you from doing it twice.
                      by
                      • Verified Purchase
                      • Recommended
                      4 found this review helpful
                      The Best Home Project my boyfriend and I completed!
                      The classic style of this Mayne Dover mailbox stand added a clean and sophisticated look to our yard which is far better than what we had before! It's light in weight as far as handling it to assemble but strong enough to handle our 12 pound mailbox. It was easy to assemble with clear instructions/pictures and the necessary hardware! The only other piece you'll need is the wooden 4 x 4 post that the mailbox stand slides over. I also chose to purchase the Mayne No-Dig Ground Anchor which made the job easier. It's a lot more enjoyable to go get the mail and it has the added feature of the newpaper slot. Love it!
                      by
                      • DIY
                      • Verified Purchase
                      • Recommended
                      Quick and easy but what a difference
                      It took us an afternoon to install. We cut to size the old post and simply slipped Dover mail post over. I can't believe we waited so long - the difference is night and day.
                      by
                      • Verified Purchase
                      • Recommended
                      8 found this review helpful
                      Sturdy and easy to install
                      The polyethylene mailbox post and polyethylene newspaper holder are sturdy and should give many years of use. Being that these components are "plastic", there is some flex in the whole setup, but nothing serious. The included illustrated instructions are easy to follow. The mailbox post itself is easy to install -- simply slide it over a 4"x4" wood post (previously placed in the ground), place the newspaper holder (mailbox support arm) at a suitable level, use the pre-drilled holes in the newspaper holder as a guide to drill four holes through the poly post and into the 4x4, and then secure the newspaper holder and poly post to the 4x4 with the provided lag bolts and screws. In addition to the mailbox post and newspaper holder, a totally new installation also requires obtaining a 4x4 wood post (and "planting" it into the ground), a mailbox, and mailbox mounting hardware. The instructions show mounting the mailbox on top of the newspaper holder by drilling holes in the floor of the mailbox and the top of the newspaper holder, putting bolts (not provided) through the holes, and securing the bolts with nuts inside the newspaper holder opening. I found it easier to mount the mailbox on the newspaper holder in the same manner in which mailboxes are typically mounted on a wooden support arm -- put screws through the standard holes at the bottom edge of the mailbox and into the side of the top edge of the newspaper holder. The mailbox post and newspaper box were shipped in two boxes directly from the manufacturer and arrived about three days after I placed the order online with Home Depot. About three weeks later the company called to see if the items arrived in good order and if I was satisfied with the product. (Yes!) That's good customer service rarely seen!
                      by
                      • DIY
                      • Verified Purchase
                      • Recommended
                      15 found this review helpful
                      Showing 1-10 of 191 reviews

                      Compare Key Features

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                      Product Snapshot

                      Perfect for upgrading your curb appeal with this decorative, weather-resistant mailbox post. Easy installation over a 4x4 wood post.
                      Perfect for upgrading your home with a weather-resistant, rust-resistant mailbox post, adding style and functionality.
                      Perfect for upgrading your home with a classic, weather-resistant mailbox post, adding style and functionality.
                      Built for lasting durability, this recycled plastic mailbox post resists rot and deterioration. Ideal for homeowners seeking eco-friendly, low-maintenance curb appeal.

                      Height

                      56.5 in.
                      59.75 in.
                      56.5 in
                      74.9 in

                      Weight Capacity

                      12 lb
                      200 lb
                      12 lb
                      40 lb

                      Material

                      Polyethylene
                      Resin
                      Polyethylene
                      Recycled Plastic

                      Weather-Resistant

                      Rust-Resistant