Best Plastic Post-Mount Mailboxes of 2026

The Architectural Mailboxes Parsons Mailbox is a medium capacity post mount mailbox made from polypropylene plastic, ensuring it won't rust. Its durable construction makes it perfect for holding small boxes, magazines, and padded envelopes. The mailbox is also equipped with an ultraviolet inhibitor, protecting it from weathering and extending its use. Additionally, the door of the mailbox provides space to align address numbers, making it easy for mail carriers to locate. With its sleek black design and convenient features, the Architectural Mailboxes Parsons Mailbox is an ideal choice for those in need of a reliable and stylish mailbox.

The Architectural Mailboxes Grand Haven Plastic, Mailbox and Post Kit is a durable and stylish solution for your mailbox needs. With its extra-large size, this mailbox provides ample space for all your packages. The impressive craftsman design and textured finish add a touch of distinction to your home. Made from heavy-duty, rust-proof plastic, this mailbox is built to last. The magnetic door latch ensures that your mail stays securely closed. The included post sleeve makes installation over a 4x4 wooden post quick and easy. Upgrade your mailbox with the Architectural Mailboxes Grand Haven and enjoy the convenience and durability it brings.

The Step2 Express Mailbox is a durable and weather-resistant post-mount mailbox that will enhance the curb appeal of any home. With its decorative mailbox post, recessed panels, and crown molding, it mimics the look of real woodwork without the maintenance. This mailbox is large enough to hold mail, large letters, magazines, and small packages, making it convenient for receiving all types of mail. It is also easy to install, with mounting hardware included and the option to mount it on a 4x4 post. Made with EverTough heavy-duty poly construction, this mailbox is fade, weather, and vandal resistant, ensuring its durability over time. Upgrade your mailbox with the Step2 Express Mailbox and enjoy both functionality and style.

The Step2 MailMaster Mailbox offers a spacious interior that accommodates not just your standard mail but also larger letters and small packages, making it perfect for busy households. You’ll appreciate the secure magnetic closure that keeps your items safe and protected. Designed to withstand various weather conditions, this mailbox features steel-plate reinforcement, ensuring stability during harsh winds. Assembly is a breeze; simply slide it over a 4x4 wooden post, and you’re set to go. With all the necessary hardware included, you can have it ready for use in no time.

The Simplay3 Dig-Free Easy Up Classic Mailbox (Black) is a decorative mailbox accessory that features a patent-pending unique design, which allows for above ground installation without any digging or below ground post required. The mailbox is easy to assemble and install, with the base requiring 100lb. of sand (not included) to secure. The mailbox comes with color-matched hardware, a bonus funnel, and address numbers. It also features easy access, magnetized front and rear doors, and a red "pick-up mail" indicator flag. The mailbox is made with heavy-duty, durable, double-wall molded construction and is made in the USA.

The Step2 Hudson Mailbox is a stylish and functional addition to your outdoor space. With its decorative design, recessed panels, and crown molding, it enhances the curb appeal of your home. The large interior of the mailbox can accommodate mail, large letters, magazines, and small packages, making it convenient for receiving all types of mail. The mailbox is easy to install, with mounting hardware included, and it can be mounted on a 4x4 post. Made with EverTough, heavy-duty poly construction, it is fade, weather, and vandal resistant, ensuring its durability. Upgrade your mailbox with the Step2 Hudson Mailbox and enjoy its practicality and aesthetic appeal.