Best Plastic Security Mailboxes in 2026

Daisy
Last Updated: Feb 9, 2026

At a Glance: Our Top Picks for Plastic Security Mailboxes

Decaller Stainless Steel Mailboxes with Sturdy Key Lock, Wall Mounted Waterproof Mail Box with Transparent Cover, 15.4" x 12"x 4.8"
#TOP1
Decaller Stainless Steel Mailboxes With Sturdy Key Lock,
9.7
PM SCORE
KYODOLED Locking Mailbox Wall Mount,Locked Mail Boxes, Mailbox with Key Lock for Outside,Large Capacity Mailbox for Newspapers,13 x 3.4 x 11.8 Inch, Black
#TOP2
Kyodoled Locking Mailbox Wall Mount,Locked Mail Boxes, Mailbox
9.7
PM SCORE
Large Mailbox Wall Mount with Lock, Decaller Modern Mailboxes for Outside, Black, 14.4" x 13" x 4.2"
#TOP3
Large Mailbox Wall Mount With Lock, Decaller Modern
9.5
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Plastic Security Mailboxes of 2026

Market Overview
Plastic Security Mailboxes Reviewed
  • Reviews Analyzed: 5440 Items
  • PM Avg. Rating: 6.5 / 10
18 Products Evaluated
  • Highest Price: $887.51
  • Lowest Price: $29.99
  • Avg. Price: $152.54

Decaller Stainless Steel Mailboxes With Sturdy Key Lock, Wall Mounted Waterproof Mail Box With Transparent Cover, 15.4" X 12"X 4.8"

DECALLER
YXHPB2203N01
12.00 X 4.80 X 15.40 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Decaller 9.88

Features

· Stainless Steel: the material of mailboxes is stainless steel. It is characterized by sturdy and unyielding to rust

· Large Capacity: the size of mailbox is 15.4" x 12"x 4.8" , it fits small boxes, magazines, padded envelopes and so on

· Sturdy Lock: decaller mailbox has sturdy key lock with 2 key for security, it can prevent mails theft

· Details Design: inclined cover on the top is waterproof, transparent cover make you know mails status in time

· Detailed instructions: the package includes a detailed instructions for convenient installation

Kyodoled Locking Mailbox Wall Mount,Locked Mail Boxes, Mailbox With Key Lock For Outside,Large Capacity Mailbox For Newspapers,13 X 3.4 X 11.8 Inch, Black

KYODOLED
14.30 X 4.10 X 11.80 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
GTlight 9.91

Features

Newspaper Collect:Mail Box have a rectangular shape newspaper bucket,can hold large envelopes,magazines, padded envelopes and so on

Large Capacity - ⚠️⚠️The magazine place on the bottom and the letterbox above are split. The letter place above is 11.8*9.8 in and the newspaper place below is 11.8*3.2 in.

Weatherproof Design: Cover on the top is waterproof, Letter boxes with powder-coated covers can protect it from rain and severe weather in certain extent

Easy Installation: KYODOLED mailbox package includes anchors, mounting screw and a detailed instructions for convenient installation.

Safe and Quality - KYODOLED mailbox is made by quality galvanized metal for strength and durability, has Large Capacity to store mails of several days for outside,with 2 keys for security against mail theft

Large Mailbox Wall Mount With Lock, Decaller Modern Mailboxes For Outside, Black, 14.4" X 13" X 4.2"

DECALLER
13.00 X 4.20 X 14.40 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Decaller 9.88

Features

· Safe and Quality : The mailbox is made by quality galvanized steel, enough secure to provide heavy duty security and sustainability with 2 keys

· Newspaper Compartment : At the bottom of mailbox, it has a rectangular shape newspaper bucket for collect newspaper

· Large Capacity : External size is 14.4" x 4.2" x 13", inside size is 11.8" x 3.5" x 9.1"

· Sturdy Lid : Lid on the top of mailboxes can protect it from rain and snow in certain extent

· Easy Installation : We provide each mailbox convenient mounting hardware and instruction for easy installation by yourself

Decaller Metal Wall Mounted Mailboxes With Key Lock, Large Mail Box With View Window, Black

DECALLER
13.00 X 4.10 X 11.90 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Decaller 9.88

Features

Galvanized Material: the material of mailboxes is galvanized. It is characterized by sturdy and unyielding to rust

Large Capacity: the size of mailbox is 13" x 11.99" x 4.1", it fits small boxes, magazines, padded envelopes and so on

Sturdy Lock: decaller mailbox has sturdy key lock with 2 key for security, it can prevent mails theft

Details Design: inclined cover on the top is waterproof, transparent cover make you know mails status in time

Detailed instructions: the package includes a detailed instructions for convenient installation

Wall Mount Locking Mailbox - Black Large Capacity Security House Numbers Mailbox - Waterproof Stainless Steel Vertical Drop Mail Box Outdoor With Keys

ZUOZUOYA
3.93 X 10.24 X 12.20 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ZUOZUOYA 5.13

Features

SECURITY:The size of the place where the package is placed is 8*1.2inches.Please note that the MAIL shown in the picture already exists and house number is variable

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

THIS IS A MUST BUY: Our locking 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

EASY TO INSTALL: No wiring needed, wall fixtures included. Place it to wall, door, garage, fence and anywhere you want.And please note that there is no numbers stickers in the package

BEST AFTER-SALES SERVICE:We have 24-hour online customer service.You can get a full refund if you are not satisfied with it unconditionally.Do not hesitate to contact us if you have any questions.Customer satisfaction is our top priority

#TOP6

Yescom Wall-Mounted Mail Box Large Lockable Letterbox W/Steel Retrieval Door & 2 Keys For Home Post Security Outdoor

YESCOM
06MBX002-ST-L06
15.60 X 12.00 X 3.80 Inches
3.70 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Yescom 9.84

Features

[Wall Mount Mail Box]: 15 9/16"x12"x3 3/4" Large Wall Mount Mail Box with slim size for taking up less space, features outward opening door for taking out your mails conveniently; Large inner compartment to store letters, newspaper and magazines

[Durable Construction]: Made of solid steel with powder coating finish, corrosion-resistant, anti-rust and weather-proof, suitable for outdoor & indoor use

[Lockable & Safe]: Comes with lock and 2 keys for providing anti-theft protection & added security, ensuring that your sensitive mails are safely held at your doorstep

[Easy Installation]: With 4 pre-drilled mounting holes on the back plate, the mail box can be mounted firmly on walls, sheds, gates or garages

[Large Mail Slot]: Large slot opening at the top to allow mails or newspaper to easily fit through, with overhanging hinged lid to effectively protect the mails from dust

Black Wall Mount Mailbox - Large Capacity Security Wall Mailbox - Waterproof Iron Vertical Drop Mail Box Outdoor

LYLEE
LY-108B
4.00 X 10.20 X 12.20 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
LYLEE 5.73

Features

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

EASY TO INSTALL: No wiring needed, wall fixtures included. Place it to wall, door, garage, fence and anywhere you want.And it comes with 4 sets of 4 inches numbers (from 0 to 9),you can DIY address numbers according your preference

BEST AFTER-SALES SERVICE:We have 24-hour online customer service.You can get a full refund if you are not satisfied with it unconditionally.Do not hesitate to contact us if you have any questions.Customer satisfaction is our top priority

Wall Mount Locking Mailbox - Black Large Capacity Security Mailbox - Waterproof Stainless Steel Vertical Drop Mail Box Outdoor With Key

LYLEE
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
LYLEE 5.73

Features

SECURITY:The size of the place where the package is placed is 8*1.2inches.And 4 Keys included.Please note that the MAIL shown in the picture already exists and house number is variable

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

THIS IS A MUST BUY: Our locking 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

EASY TO INSTALL: No wiring needed, wall fixtures included. Place it to wall, door, garage, fence and anywhere you want.And it comes with 4 sets of numbers (from 0 to 9),you can DIY address numbers according your preference

BEST AFTER-SALES SERVICE:24-hour online customer service.You can get a full refund if you are not satisfied with it unconditionally.Do not hesitate to contact us if you have any questions.Customer satisfaction is our top priority

Yoobox Mailbox Wall Mount, Steel Mail Boxes With Key Lock And Newspaper Compartment, Drop Box For Waterproof & Rust-Proof, Medium Capacity For House, 11.02 X 11.02 X 4.33 Inch, Black, Md021

YOOBOX
MAILBOXES 1-03
11.02 X 4.33 X 11.02 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon Warehouse 9.90

Features

📭【HIGH-QUALITY & DURABLE】Mailbox wall-mounted is made of sturdy galvanized steel, The powder coated can waterproof, prevents-rust, scratch-resistant and windproof. The product will provide long-term durability and use for years to come.

📭【ENOUGH CAPACITY】Postbox fits hold multiple letters, magazines, emails, newspapers, payment drops, interoffice mail. Size: 11.02 x 11.02 x 4.33 inch.

📭【SECURITY WITH KEY LOCK】Mail boxes with sturdy key lock for security, it can prevent mails theft. The top cover adopts a flip design to prevent leaves from falling into the letter box.

📭【EASY INSTALLATION】The Drop box has pre-drilled holes, 4 x screws, 4 x expansion screw tube, 4 Black washer. Can install it by yourself, It is simple and quick.

📭【ALL-WEATHER SERVICE】If you have any questions, please feel free to contact us (Through the order or Email), we provide positive, sincere high-standard customer service.

Yoobox Mailbox Wall Mount, Steel Mail Boxes With Key Lock And Newspaper Compartment, Drop Box For Waterproof & Rust-Proof, Large Capacity, For House, 14.57 X 14.57 X 4.33 Inch, Black Md021 Pro

YOOBOX
4.33 X 14.57 X 14.57 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
YOOBOX_USA 5.23

Features

📪【HIGH-QUALITY & DURABLE】Mailbox wall-mounted is made of sturdy galvanized steel, The powder coated can waterproof, prevents-rust, scratch-resistant and windproof. The product will provide long-term durability and use for years to come.

📪【LARGE CAPACITY】Postbox fits hold multiple letters, magazines, emails, newspapers, payment drops, interoffice mail. Size: 14.57 x 14.57 x 4.33 inch.

📪【SECURITY WITH KEY LOCK】Mail boxes with sturdy key lock for security, it can prevent mails theft. The top cover adopts a flip design to prevent leaves from falling into the letter box.

📪【EASY INSTALLATION】The Drop box has pre-drilled holes, 4 x screws, 4 x expansion screw tube, 4 Black washer. Can install it by yourself, It is simple and quick.

📪【ALL-WEATHER SERVICE】If you have any questions, please feel free to contact us (Through the order or Email), we provide positive, sincere high-standard customer service.

#TOP11
Best For Ecco

Yoobox Mailbox Wall Mount, Steel Mail Boxes With Key Lock, Drop Box For Waterproof & Rust-Proof, Large Capacity, For House And Gates, 14.57 X 14.57 X 4.33 Inch, Black Md002 Pro

YOOBOX
14.57 X 4.33 X 14.57 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
YOOBOX_USA 5.23

Features

📪【HIGH-QUALITY & DURABLE】Mailbox wall-mounted is made of sturdy galvanized steel, The powder coated can waterproof, prevents-rust, scratch-resistant and windproof. The product will provide long-term durability and use for years to come.

📪【LARGE CAPACITY】Postbox fits hold multiple letters, magazines, emails, newspapers, payment drops, interoffice mail. Size: 14.57 x 14.57 x 4.33 inch.

📪【SECURITY WITH KEY LOCK】Mail boxes with sturdy key lock for security, it can prevent mails theft. The top cover adopts a flip design to prevent leaves from falling into the letter box.

📪【EASY INSTALLATION】The Drop box has pre-drilled holes, 4 x screws, 4 x expansion screw tube, 4 Black washer. Can install it by yourself, It is simple and quick.

📪【ALL-WEATHER SERVICE】If you have any questions, please feel free to contact us (Through the order or Email), we provide positive, sincere high-standard customer service.

Barska Cb13254 Large Wall Mount Classic Collection Locking Drop Suggestion Mail Box

BARSKA
CB13254
7.00 X 15.00 X 12.75 Inches
4.95 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

【Secure Multi-Purpose Drop Lock Box】 This lock box is durable, lockable, mountable and comes with 2 keys & mounting hardware.

【Secure Storage】Designed to provide a secure way of locking up important items such as suggestion slips, ballots, mail, documents, keys, money, and much more.

【Convenient Office Use】This drop box is perfect for any work space or office use; The lockable drop box offers the perfect solution for security.

【Drop Slot】The drop box has a slot opening on top which accepts items up to 10 inches in width.

【Mounting】Pre-drilled holes and hardware allows the drop box to an be mounted directly to a wall. Includes Mounting Hardware; Lock Box Keys.

Wall Mount Locking Mailbox With Code Lock - Black Large Capacity With House Numbers Security Digital Password Lock Mailbox - Waterproof Iron Vertical Drop Mail Box Package Delivery Box Outdoor

FANINC
FA-206
5.47 X 15.90 X 12.76 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ningboruiruiwangluogongchengyouxiangongsi 4.60

Features

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

EASY TO INSTALL: No wiring needed, wall fixtures included. Place it to wall, door, garage, fence and anywhere you want.And it comes with 4 sets of 4 inches numbers (from 0 to 9),you can DIY address numbers according your preference

BEST AFTER-SALES SERVICE:We have 24-hour online customer service.You can get a full refund if you are not satisfied with it unconditionally.Do not hesitate to contact us if you have any questions.Customer satisfaction is our top priority

Qualarc Wf-1515 Vista Rectangular Locking Mailbox Gray Body, Door Top, Grey, Red/Black

QUALARC
WF-1515
5.50 X 11.00 X 15.50 Inches
5.50 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
UnbeatableSale, Inc 9.83

Features

This scratch resistant powder coated steel mailbox has a gray body, black top and red door

Large mailbox size: 11 inch w x 15.5 inch H x 5.5 inch D will hold several days of mail

Heavy duty lock with 2 keys adds security

Incoming mail slot opening is 8.625 inch long and 1.125” wide and will fit most envelopes and magazines but keep unwanted hand out

Mounting hardware not included. If mounting to a masonry wall, use masonry mounting screws with masonry anchors (at least 1-1/2 inch long)

Qualarc Lewiston Cast Aluminum Post Mount Mailbox System With Post, Aluminum Mailbox, Fluted Base And Ball Finial, White, Ships In 2 Boxes

QUALARC
LM-804-LPST-WHT
20.00 X 8.00 X 72.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Cast Aluminum powder coated will not rust and is scratch resistant

Decorative fluted base

Ball finial mounts to top of post

Mailbox 8-1/2" x 1" x 2". 3" OD direct burial pole height 5' 2"

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

Qualarc Lewiston Cast Aluminum Post Mount Mailbox System With Post, Aluminum Mailbox, Fluted Base And Ball Finial, Bronze, Ships In 2 Boxes

QUALARC
LM-804-LPST-BZ
20.00 X 8.00 X 72.00 Inches
17.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
stores123 9.87

Features

Cast Aluminum powder coated will not rust and is scratch resistant

Decorative fluted base

Ball finial mounts to top of post

Mailbox 8-1/2" x 1" x 2". 3" OD direct burial pole height 5' 2"

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

Qualarc Lib-Bl-Lm6-46 Liberty Rear Access Locking Mailbox With 4" To 6" Chute & Black Letter Plate

QUALARC
LIB-BL-LM6-46
14.00 X 11.50 X 16.50 Inches
18.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VirVentures 9.95

Features

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

Rear access door opening: 7" w x 7.5" h incoming opening dimensions: 9"w x 2.5" h overall product dimension: h 16.5" x w 11.5" x d 14" weight 18 lbs.

Optional anti-theft high security plate can be added to decrease opening front slot to 9" x 1" order item # hs-plate

Architectural Mailboxes 6200B-10 Oasis Classic Locking Post Mount Parcel Mailbox With High Security Reinforced Lock, 18.00 X 15.00 X 11.50 Inches & 4X4 Steel 7540B-10 Mailbox Adapter Plate, 4" X 4"

ARCHITECTURAL MAILBOXES
18.00 X 11.50 X 15.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Product 1: Postmaster General approved and patented design allows delivery of mail bundles and small parcels - perfect for Internet and catalog shoppers

Product 1: Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for durability and long life

Product 1: Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other corrosion resistant materials

Product 1: Suitable for installation into a pilaster or column - the entire outer shroud is one piece to resist moisture and the elements

Product 2: Can be used to attach Architectural Mailboxes post mount Mailbox to a wooden 4x4 post

Product 2: Multiple bolt hole patterns, including 4x10 bolt hole pattern and 11-1/4″ side flange mount screw pattern

Product 2: Can be installed onto a wooden post as a top mount, side rail mount and front cantilever mount to suit your needs

Product 2: Durable galvanized steel construction

Top 10 security mailboxes Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Qualarc 4
Decaller 3
Yoobox 3
Lylee 2
Architectural Mailboxes 1
Barska 1
Faninc 1
Kyodoled 1
Yescom 1
Zuozuoya 1

Top 10 security mailboxes Brands Pie Chart


We've carried out a comprehensive analysis of 5,440 reviews on security mailboxes, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select security mailboxes priced around $152.54, with top brands including and

Our team of expert editors reviewed these high-quality items and handpicked the top 18 security mailboxes for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .

We are dedicated to assisting our users in finding the right mailboxes Products based on their needs, saving them considerable time when choosing which security mailboxes to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.