Best Plastic Security Mailboxes in 2026

Large capacity fits larger boxes, padded envelopes, and magazines laid flat

Rust-proof plastic construction is highly durable providing strength and stability

Wide opening allows easily delivery of packages

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.

Large capacity secure wall mount locking mailbox made of 14- and 16-gauge electrogalvanized steel for strength and durability

Patented anti-pry latch locking mechanism and 12-wafer disc lock to prevent leveraged entry; Includes vandal resistant flag

Patented Fast-Trak Mounting Plate for easy installation on existing posts in minutes

Large capacity secure wall mount locking mailbox made of 14- and 16-gauge electrogalvanized steel for strength and durability

Patented anti-pry latch locking mechanism and 12-wafer disc lock to prevent leveraged entry; Includes vandal resistant flag

Patented Fast-Trak Mounting Plate for easy installation on existing posts in minutes

Large capacity secure wall mount locking mailbox made of 14- and 16-gauge electrogalvanized steel for strength and durability

Patented anti-pry latch locking mechanism and 12-wafer disc lock to prevent leveraged entry; Includes vandal resistant flag

Patented Fast-Trak Mounting Plate for easy installation on existing posts in minutes

RED FLAG:The design of the red flag indicates that this mailbox has the function of sending parcels and mails

DURABLE&WATERPROOF: Sleek modern design, locking mailbox made of iron with satin finish,and the iron is waterproof design can be against rain,wind and snow weather well

THIS IS A MUST BUY: The wall malibox has medium capacity with dimensions W 10.2" H 12.2" D 4",it is suitable for mail and newspapers.And you can paste the house numbers on the mailbox.The size of the mailing port is 8*1.2inches

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.

SECURITY&RED FLAG:The mailbox adopts the innovative password lock design, which ensures the security of the package to a great extent and reduces the trouble of using the traditional key lock.And the design of the red flag indicates that this mailbox has the function of sending parcels and mails.Pull open the silver handle of the mailbox, the letter to be sent can be placed in the inner compartment

DURABLE&WATERPROOF: Sleek modern design, locking mailbox made of iron with satin finish,and the iron is waterproof design can be against rain,wind and snow weather well

THIS IS A MUST BUY: The wall malibox has medium capacity with dimensions W 10.2" H 12.2" D 4",it is suitable for mail and newspapers.And you can paste the house numbers on the mailbox.The size of the mailing port is 8*1.2inches

DURALINE EXTRA LARGE CAPACITY MAILBOX - Our xl mailbox measures 10"x 12"x 20", providing sufficient space for packages and mail and ensuring all the items remain organized. It complies with postal standards, removing the need to worry about legal issues.

ULTRA-DURABLE - Made from ultra-thick puck board plastic, it is weatherproof and will survive the roughest storms, winds, and snow. The extra large rural mailbox also features stainless steel hinges and fasteners, ensuring reliable operation.

EASY TO INSTALL - These large mailboxes for outside come with clear instructions, making the entire process hassle-free. Hang it up or screw it onto the post. The installation will only take minimal time and effort, preventing frustration and exhaustion.

Product 1: Large capacity secure wall mount locking mailbox made of 14- and 16-gauge electrogalvanized steel for strength and durability

Product 1: Patented anti-pry latch locking mechanism and 12-wafer disc lock to prevent leveraged entry; Includes vandal resistant flag

Product 1: Patented Fast-Trak Mounting Plate for easy installation on existing posts in minutes

Product 1: Large capacity secure wall mount locking mailbox made of 14- and 16-gauge electrogalvanized steel for strength and durability

Product 1: Patented anti-pry latch locking mechanism and 12-wafer disc lock to prevent leveraged entry; Includes vandal resistant flag

Product 1: Patented Fast-Trak Mounting Plate for easy installation on existing posts in minutes

USPS approved full service curbside locking mailbox for residential use, secures your mail and helps prevent identity theft

Heavy duty 14- and 16-gauge electro galvanized welded steel construction with durable powder-coated finish defends against vandalism

Innovative baffle door design allows for delivery of small packages and parcels but prevents fishing