Best Plastic Security Mailboxes in 2026

Extra-Large capacity fits multiple packages, boxes, and padded envelopes, packages and boxes

Heavy-Duty galvanized steel construction provides strength, stability and resisting rust

Grey powder-coated finish is rust-resistant to withstand the elements

1. Perfect size - 46" tall X 16.5" W , Item Weight: 18.3 pounds, large tall and heavy duty. Material: cast aluminum and cast iron. Color: White

2. Brand new and high quality color, classic and upscale made of aluminum and steel, durable and for long time using with lock for keeping your letter security simple assemble need and all the hardware include.

3.Locking access door with 2 keys keeps mail safe, Features a historic design, locking door. Please note: the mailbox has no red flag, only for receiving mails and can't mail it out.

1. Perfect size - 46" tall X 16.5" W, Item Weight: 18.3 pounds, Large tall and heavy duty. Material: cast aluminum and cast iron. Color: Bronze

2. Brand new and high quality color, classic and upscale made of aluminum and steel, durable and for long time using with lock for keeping your letter security simple assemble need and all the hardware include.

3. Locking access door with 2 keys keeps mail safe, Features a historic design, locking door. Please note: the mailbox has no red flag, only for receiving mails and can't mail it out.

Locking access door with 2 keys keeps mail safe, Features a historic design, locking door

Perfect size - 46" tall X 16.5" W , Large tall and heavy duty. Material: cast aluminum and cast iron. Color: White

The easy assembly and installation will have your new stylish mailbox up in no time. Do Not Hesitate, Just Buy One!

QUALITY: The mailbox is classic and rust-proof, which is made of cast aluminum

SECURITY: Innovative baffle door accepts letters, small parcels magazines newspapers and also deters fishing

CAPACITY: This type of mailbox has a large box that can hold about 5 days of mail and magazines. The total height of the Cast Aluminum Mailbox is 46.06 inches, weight 18.3 pounds

QUALITY: The mailbox is classic and rust-proof, which is made of cast aluminum

SECURITY: Innovative baffle door accepts letters, small parcels magazines newspapers and also deters fishing

CAPACITY: This type of mailbox has a large box that can hold about 5 days of mail and magazines. The total height of the Cast Aluminum Mailbox is 46.06 inchs, weight 18.3 pounds

ADDRESS NUMBERS SHIPPED SEPERATELY: Up to five 2-Inch solid brass or reflective gold address numbers are included with your purchase. Once you purchase the Oak Mailbox and Post System from Addresses of Distinction message us with your order number, your choice of brass or reflective gold, and up to 5 numbers. We will send two sets of your street numbers to place on both sides of your address plate. Our numbers are self-adhesive, so it will be simple to apply to your address plaque.

TRADITIONAL MAILBOX AND POST SYSTEM: The Oak System features a traditional American Eagle embossed on the front door. All components of this system feature a smooth rust resistant black finish. The metal mailbox measures 18.75" Long x 8.75" Tall x 6.25" Wide and sits atop the strong 6-foot tall post.

SINGLE PIECE POST FOR STURDY CONSTRUCTION: The Oak Post and Mailbox is cast from 100% rust free, powder coated ¼” aluminum. Our posts feature a strong single-piece construction that is placed 18-28 inches into the ground. Similar systems have 1/8”multi-piece posts which can weaken and bend over time. Our mailbox system will stand up to heavy winds, rains, blizzards, and storms. The Oak will serve as a beautiful introduction to your home for years to come.

Cast Aluminum: Thick aluminum metal promises strength and durability, as well as resistance against weather and scuffing

Hand Crafted Design: Ornamented in a Rustic Bronze aesthetic to complement any color scheme

Key Locking Mechanism: Unobtrusive key-lock mechanism ensures security without aesthetic comprimise

HIGH QUALITY: Mailboxes are made of aluminum for strength and durability, which can effectively prevent rust（theoretically never rusts), and environmental professional outdoor powder coated, which can scratch-resistant and will not fade. This mailbox will provide long-lasting strength and use throughout the years.

LARGE CAPACITY: the size of mailbox is 15.35 "x 16.14 "x3.54" inch, Yoocabinet mail box can hold letters, magazines and large envelopes, or to hold several days of mail at a time.

SAFE LOCK: Our wall mount mailbox with sturdy key lock for security, it can prevent mails theft.

HIGH QUALITY: Mailboxes are made of aluminum for strength and durability, which can effectively prevent rust（theoretically never rusts), and environmental professional outdoor powder coated, which can scratch-resistant and will not fade. This mailbox will provide long-lasting strength and use throughout the years.

LARGE CAPACITY: the size of mailbox is 15.35 "x 16.54 "x3.74" inch, Yoocabinet mail box can hold letters, magazines and large envelopes, or to hold several days of mail at a time.

SAFE LOCK: Our wall mount mailbox with sturdy key lock for security, it can prevent mails theft.

Material:100% Cast Aluminum Will Not Rust,Stainless Steel Hardware.

Mailbox Assembly Components: Roof, Box with door and pre-installed 5-pin cam lock.

The easy assembly and installation will have your new stylish mailbox up in no time.

Cast Aluminum powder coated will not rust and is scratch resistant

Decorative fluted base

Ball finial mounts to top of post

Single post with Lewiston mailbox, square base and pineapple finial

Add our Lewiston Locking Mailbox Conversion Kit for added security Amazon # B01KSELS4O

Protective, weather-resistant Bronze powder coated finish. Made from solid cast aluminum and steel 

Cast Aluminum powder coated will not rust and is scratch resistant

Decorative fluted base

Ball finial mounts to top of post

Constructed from heavy-duty steel and plastic offering durability and resistance to rust

Extra large capacity provides ample space to house various types of mail and high volume mail deliveries

Features an incoming mail slot concealed by an aluminum flap for added security

Install a security chute that drops your mail to a locking rear door, ensuring easy retrieval when mounted in a column or wall

Have peace of mind knowing that your mail is secured in your Manchester mailbox

16 gauge steel masonry box is electro-galvanized and powder coated inside and out to last a lifetime

Single post with Lewiston mailbox and pyramid finial

Add our Lewiston Locking Mailbox Conversion Kit for added security Amazon # B01KSELS4O

Protective, weather-resistant Black powder coated finish. Made from solid cast aluminum and steel 

Single post with Lewiston mailbox, square base and pyramid finial

Add our Lewiston Locking Mailbox Conversion Kit for added security Amazon # B01KSELS4O

Protective, weather-resistant Black powder coated finish. Made from solid cast aluminum and steel 

Decorative mailbox only (no address plates)

Mailbox is post mount and made of rust-free cast aluminum with a tough powder coat weather resistant finish

Dimensions. 10' high, 8" wide 20 " deep weighs 13 lbs

Single post with Lewiston mailbox, square base and large ball finial

Add our Lewiston Locking Mailbox Conversion Kit for added security Amazon # B01KSELS4O

Protective, weather-resistant Black powder coated finish. Made from solid cast aluminum and steel 

【High-Quality Thickened Material】— The mailbox is weather-resistant and corrosion-resistant, galvanized steel and aluminum stamping process, the thickened material is impact-resistant, and not easy to dent and break, ensuring the safety of your mail.

【Large Capacity】— The mailbox can hold magazines and large envelopes. The ample spacious interior can hold days' worth of mail.

【Classic Modern Appeal】— The xhlokk modern universal mailbox will complement your house no matter where it is placed. A classic and stately mailbox that will never go out of style.

Mount in masonry walls and columns chute adjusts to match the thickness of your wall

Castings are made in solid aluminum and top quality black enamel finish. Manufactured in England

Large capacity, secure mail storage with rear lockable door supplied with 2 keys

Single post with Lewiston mailbox and Urn finial

Add our Lewiston Locking Mailbox Conversion Kit for added security Amazon # B01KSELS4O

Protective, weather-resistant Bronze powder coated finish. Made from solid cast aluminum and steel 

Single post with Lewiston mailbox, square collar and pyramid finial

Add our Lewiston Locking Mailbox Conversion Kit for added security Amazon # B01KSELS4O

Protective, weather-resistant White powder coated finish. Made from solid cast aluminum and steel 

【High-Quality Thickened Material】— The mailbox is weather-resistant and corrosion-resistant, galvanized steel and aluminum stamping process, the thickened material is impact-resistant, and not easy to dent and break, ensuring the safety of your mail.

【Large Capacity】— The mailbox can hold magazines and large envelopes. The ample spacious interior can hold days' worth of mail.

【Classic Modern Appeal】— The xhlokk modern universal mailbox will complement your house no matter where it is placed. A classic and stately mailbox that will never go out of style.