Best Plastic Post-Mount Mailboxes of 2025

The Gibraltar Mailboxes Patriot Large Capacity Mailbox is a rust-proof plastic mailbox that fits larger boxes, padded envelopes, and magazines laid flat. It has a wide opening that allows easy delivery of packages and includes an arrived mail indicator flag. The mailbox is fully assembled, making installation convenient. Additionally, it is made in the USA and has a non-locking security feature. Users can match it with Gibraltar Mailboxes posts with the letter designation code E.

The Architectural Mailboxes Mailbox Kit offers a practical solution for your mailing needs. The mailbox features a sturdy double-walled plastic construction, ensuring it is both rust-proof and highly durable. This means you can rely on it to withstand the elements without worrying about wear and tear. With its medium capacity, it accommodates small packages, magazines, and padded envelopes, making it versatile for daily use. Additionally, the ultra-violet inhibitor finish helps maintain its vibrant color, preventing fading from sun exposure. Finally, the safety rear door allows you to access your mail without stepping into traffic, enhancing your safety during pickups.

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 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 Gibraltar Parsons Mailbox is a medium capacity post-mount mailbox that offers durability and convenience. Made from sturdy polypropylene material, this mailbox is rust-proof and can withstand various weather conditions. Its medium capacity allows you to easily store small boxes, magazines, and padded envelopes. The mailbox features an ultra-violet inhibitor that protects its white finish from weathering, ensuring it maintains its pristine appearance over time. With an easy installation process onto a variety of Gibraltar posts, including the BP000W01 and WP000W01, this mailbox is a reliable and stylish addition to any home. Made in the USA, the Gibraltar Parsons Mailbox is a trusted choice for your mailing needs.

The BILT CRE8 Mailbox from Architectural Mailboxes offers a robust design made from rust-proof polypropylene plastic, ensuring it withstands the elements. With its extra-large capacity, it accommodates larger parcels, including USPS priority flat rate boxes, making it ideal for those who frequently receive packages. The mailbox features a magnetic door closure that keeps it securely shut, preventing mail loss between pickups. Additionally, the embossed side panels allow you to easily display your address numbers, enhancing visibility for deliveries and visitors alike.

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 Mailmaster Mailbox is designed with your convenience in mind. Its large interior can easily accommodate letters, magazines, and small packages, ensuring that you receive all your mail without hassle. The secure door features a magnetic closure, keeping your items safe and protected. You'll appreciate the weather-resistant design, which stands strong against rain, snow, and sun, thanks to its steel-plate reinforcement. Plus, assembly is a breeze—just slide it over a 4x4 wooden post, making installation quick and simple for you.

The Simplay3 Mailbox & Post Mount is a large traditional residential black mailbox with a classic post mount. It features two heavy-duty magnetic access doors, allowing for secure front and rear mail retrieval. With its large capacity, this mailbox can fit small boxes, newspapers, magazines, envelopes, and other packages. The cherry red flag mail pick up indicator conveniently swivels 90 degrees out from the front mailbox door. The mailbox is quick and easy to install over a new or existing 4x4 wood post. Made with heavy-duty double wall construction, this mailbox is built to last. With the Simplay3 Mailbox & Post Mount, you can have a secure and convenient way to receive your mail, all while adding a touch of classic style to your home.

The Architectural Mailboxes Gentry is a comprehensive mailbox kit that includes everything you need for easy installation. Its double-walled plastic construction ensures it is rust-proof and highly durable, making it perfect for various weather conditions. With a large capacity, you can comfortably fit small boxes, magazines, and newspapers, eliminating the worry of overflowing mail. The ultra-violet inhibitor finish protects the mailbox’s color from fading in the sun, keeping it looking new for longer. Additionally, the safety rear door allows you to access your mail without stepping into traffic, enhancing your convenience and safety.