10 Best Rainproof Stainless Steel Mailbox of 2025

Tested and Reviewed: Top 10 Rainproof Stainless Steel Mailbox deals with expert ratings from 8.1 to a perfect 10

July 2025 Edition

Editor's Choice

9.7

POCHAR

Through-The-Wall Drop Box with Rainproof Cover | Heavy Duty Through Wall Mailbox with 10-Inch Adjustable Chute | Rainproof Locking Drop Safe for Mail, Rent, Checks, Cash, and Keys

Editor's bottom line:

“This rainproof stainless steel mailbox is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

DURABLE AND RAINPROOF: This through-wall mailbox is made of stainless steel cover, galvanized steel chute, and cold rolled steel box. The rainproof cover will keep your keys, check, money, emails, and letters dry and clean.
MAILBOX THROUGH WALL: This jumbo mailbox is designed to be mounted through walls from 5.5'' to 10 thick, and is compatible with common types of walls. Hardware is included so you can install your rent drop box easily.
KEY LOCK AND ANTI-FISHING: Our in-wall mail box contains a piece of jagged metal, making it impossible to reach and take out the items inside. The secured key lock will keep the objects secured in this wall deposit box.
FITS MULTIPLE ITEMS: This key drop box has an exterior dimension of 12.25'' x 6.5'' x 15'' to hold multiple objects for your office. The mail slot measures 9.25'' x 2.25'', making it ideal for envelopes with checks and cash.
GALVANIZED STEEL PIECE: The adjustable chute (5.5'' min and 10'' max) is made of galvanized steel, ensuring that your payment drop box is protected from rusting, making it the perfect through the wall dropbox for business.

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Picked by 202 people today

9.5

Save 5%

ARCHITECTURAL MAILBOXES

Architectural Mailboxes Maya Stainless Steel, Locking, Wall Mount Mailbox, 2417PS-10, Stainless Steel, Medium Capacity

5% OffFree Shipping

Main Highlights

Oversized locking modern design in brushed stainless steel
Stainless steel construction ideal for added corrosion resistance
Mail slot opening is 12.9 in. W x 1.4 in. H and can easily accept magazines and padded envelopes
Includes installation instructions and mounting hardware which includes; screws and plastic anchors for brick and other masonry installations
Solid front panel provides a place for house numbers to be applied
Slot can easily accept magazines and padded envelopes
Mail slot opening is 12.9 in. W x 1.4 in. H
Mailbox is 15.8 in. W x 13.2 in. H x 6.4 in. D
Stainless steel cam lock with 2-keys
4-pre-drilled holes makes for an easy installation

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9.5

POCHAR

Pochar Rainproof Stainless Steel Mailbox for Walls, Heavy Duty Wall Mounted Mailbox - 14.75'' x 3.75'' x 7'' Rust Proof Steel Dropbox with Rainproof Design(Silver)

Main Highlights

NO MORE WET MAILS: Our waterproof mailbox has folded edges covering the top of the stainless steel wall mount mailbox, so raindrops will drip down naturally and not get inside the mail box, keeping your items clean and dry. In addition, we include a rubber mat to keep moisture away.
RUST PROOF STAINLESS STEEL: Made of brushed stainless steel, this metal mailbox is rust resistant, durable, and long-lasting. We applied friction to the surface of this drop box to protect it from corrosion and wear, and to prolong the lifespan of this modern wall mount mailbox.
LARGE STORAGE CAPACITY: We designed this steel drop box to ensure it can hold multiple items. With an exterior dimension of 14.75'' (L) x 3.75'' (W) x 7'' (H), our mailboxes for outside wall mount is great for receiving magazines, newspapers, letters, and mails on a daily basis.
MODERN AND SLEEK: The shiny mirror-like finish makes this stylish looking mailbox for outside a chic dropbox for both home usage and business application. The silver color of this wide mailbox will look beautiful on brick walls and wooden walls of all styles and colors.
HARDWARE INCLUDED: Our wall mount mail box comes with mounting hardware! No need to spend additional time and money to buy screws and bolts for your wall mounted mail box. The installation is quick and easy so you can use this stainless mailbox almost immediately upon unboxing.

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9.2

Plugsharge

Plugsharge Modern Design Brushed Stainless Steel Mailbox for Walls, Heavy Duty Wall Mounted Mailbox - 14.5'' x 3.75'' x 7.1'' Rust Proof Steel Dropbox with Rainproof Design, Silver

Free Shipping

Main Highlights

NO MORE WET MAILS: Our waterproof mailbox has folded edges covering the top of the stainless steel wall mount mailbox, so raindrops will drip down naturally and not get inside the mail box, keeping your items clean and dry. In addition, we include a rubber mat to keep moisture away.
RUST PROOF STAINLESS STEEL: Made of brushed stainless steel 304, this metal mailbox is rust resistant, durable, and long-lasting. We applied friction to the surface of this drop box to protect it from corrosion and wear, and to prolong the lifespan of this modern wall mount mailbox.
LARGE STORAGE CAPACITY: We designed this steel drop box to ensure it can hold multiple items. With an exterior dimension of 14.5'' (L) x 3.75'' (W) x 7.1'' (H), our mailboxes for outside wall mount is great for receiving magazines, newspapers, letters, and mails on a daily basis.
MODERN AND SLEEK: The shiny mirror-like finish makes this stylish looking mailbox for outside a chic dropbox for both home usage and business application. The silver color of this wide mailbox will look beautiful on brick walls and wooden walls of all styles and colors.
HARDWARE INCLUDED: Our wall mount mail box comes with mounting hardware! No need to spend additional time and money to buy screws and bolts for your wall mounted mail box. The installation is quick and easy so you can use this stainless mailbox almost immediately upon unboxing.

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9.0

POCHAR

Pochar Stainless Steel Mailbox for Walls, Heavy Duty Wall Mounted Mailbox with Newspaper Holder - 11'' x 4.5'' x 11.50'' Silver Rust Proof Steel Dropbox(Silver)

Main Highlights

MAILBOX AND NEWSPAPER HOLDER: This wall mailbox comes with two storage spaces! Use the top compartment for letter and envelope, and the bottom holder for newspaper and magazine.
RUST RESISTANT STAINLESS MAILBOX: Our wall mounted mail box is made of 1.1mm heavy duty steel, making this architectural mailbox rust resistant and long lasting for your home and business.
VERTICAL WALL MOUNTED MAILBOX: This modern metal mailbox is designed to be mounted vertically on your porch or indoor wall. Our vertical dropbox is ideal for saving room in small spaces. Just for Indoor/Covered Space!
COMMERCIAL AND RESIDENTIAL USE: The possibility of our wall mount mailboxes is unlimited! You can choose to use this drop box as a house mount mailbox, or an utility wall mount mailbox.
HARDWARE INCLUDED WITH DROPBOX: No need to purchase hardware! We include the nails and plastic anchors with our wall mountable mail box, so you can install this letterbox immediately.

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8.8

POCHAR

Pochar Rainproof Stainless Steel Mailbox for Walls, Heavy Duty Wall Mounted Mailbox - 14.5'' x 3.75'' x 7.1'' Rust Proof Steel Dropbox with Rainproof Design (Silver)

Main Highlights

NO MORE WET MAILS: Our waterproof mailbox has folded edges covering the top of the stainless steel wall mount mailbox, so raindrops will drip down naturally and not get inside the mail box, keeping your items clean and dry. In addition, we include a rubber mat to keep moisture away.
RUST PROOF STAINLESS STEEL: Made of brushed stainless steel, this metal mailbox is rust resistant, durable, and long-lasting. We applied friction to the surface of this drop box to protect it from corrosion and wear, and to prolong the lifespan of this modern wall mount mailbox.
LARGE STORAGE CAPACITY: We designed this steel drop box to ensure it can hold multiple items. With an exterior dimension of 14.5'' (L) x 3.75'' (W) x 7.1'' (H), our mailboxes for outside wall mount is great for receiving magazines, newspapers, letters, and mails on a daily basis.
MODERN AND SLEEK: The shiny mirror-like finish makes this stylish looking mailbox for outside a chic dropbox for both home usage and business application. The silver color of this wide mailbox will look beautiful on brick walls and wooden walls of all styles and colors.
HARDWARE INCLUDED: Our wall mount mail box comes with mounting hardware! No need to spend additional time and money to buy screws and bolts for your wall mounted mail box. The installation is quick and easy so you can use this stainless mailbox almost immediately upon unboxing.

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8.6

CHICIRIS

Wall Mounted Mailbox, Stainless Steel Rainproof, Large Capacity, Easy to Install, Modern and Minimalist Home Outdoor Mailbox

Free Shipping

Main Highlights

[201 STAINLESS STEEL] - Made with highly and -resistant 201 stainless steel, ensuring long-lasting use without rusting or fading.
[WEATHERPROOF DESIGN] - Features excellent sealing and waterproofing, keeping your mail and newspaper dry and even in harsh weather conditions.
[LARGE CAPACITY] - Spacious interior offers plenty of room to accommodate letters, newspapers, and other items, for busy households and offices.
[EASY TO INSTALL] - The wall-mount design allows for easy installation on any flat surface, providing convenient access to your mail.
[MODERN AND MINIMALIST ] - Enhance the look of your home or office building with the and elegant design of this mail post box.

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Best Value

8.3

Save 20%

Parrency

Stainless Steel Mailboxes with Key Lock, Wall Mounted Large Capacity Mailbox, Silver, 14 1/5" x 14 1/5" x 3 1/2"

20% OffFree Shipping

Main Highlights

Stainless Steel: Stainless steel mailbox is characterized by sturdy and unyielding to rust
Large Capacity: 5 x 15 4/5 x 12 2/5 fits small boxes, magazines, padded envelopes and so on
Sturdy Lock: It has sturdy key lock with 2 key for security, it can prevent mails theft
Details Design: 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

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8.1

Pyoimmne

Pyoimmne Stainless Steel Mailbox, Large Capacity Wall-Mount Mailbox, Locking Mailbox with Key Lock, Mailboxeswith Newspaper Holder - Rust Proof, 15.6" x 11.7"x 4.7"

Free Shipping

Main Highlights

Premium Stainless Steel - Unlike other regular mailbox, Pyoimmne wall mount mailbox is made of high-quality stainless steel, which is built to last, sturdy, rust-resistant and offers a longer service life.
Large Capacity Mailbox - Measuring 16.2" x 12.1"x 5.1", this mailboxes is designed to hold multiple newspapers, magazines, envelopes, small packages, and post office deliveries with ease.
Mailbox with Lock & Keys - Equipped with a lock and 2 keys, which is practical, beautiful and easy to access.
Stylish Design - Featuring a simple yet elegant design with a smooth finish, transparent windows, and a newspaper compartment, this mailbox adds a elegant touch to your exterior decor.
Easy to Install - With mounting hardware included, this mailbox can be assembled in less than 10 minutes. It's very easy. If you have any questions, our team is always here to help.

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8.1

Jssmst

Jssmst Locking Wall Mount Mailbox, Stainless Steel Mailboxes with Secure Key Lock and Newspaper Compartment, HPB2203 Silver

Free Shipping

Main Highlights

LARGE CAPACITY: Jssmst mail box can hold magazine and large envelopes, it is able to hold days worth of mail at a time
EXTERIOR DIMENTIONS: 13.2 x 11.8 x 3.3 Inch; INSIDE STORAGE AREA MEASURES: 9.6 x 11.5 x 3 Inch
SECURITY WITH KEY LOCK: Jssmst mailbox includes key lock with 2 keys for security against theft. Welcome to ask for additional keys
HEAVY DUTY and ANTI -RUST: Crafted with quality galvanized steel for strength and durability. Stainless steel protect the mailbox from rust
EASY INSTALLATION: Jssmst mailbox includes pre-drilled holes, mounting screw and an instruction for easy installation

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Our Best Overall Choice

Best Choice

9.7

POCHAR

Through-The-Wall Drop Box with Rainproof Cover | Heavy Duty Through Wall Mailbox with 10-Inch Adjustable Chute | Rainproof Locking Drop Safe for Mail, Rent, Checks, Cash, and Keys

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

DURABLE AND RAINPROOF: This through-wall mailbox is made of stainless steel cover, galvanized steel chute, and cold rolled steel box. The rainproof cover will keep your keys, check, money, emails, and letters dry and clean.
MAILBOX THROUGH WALL: This jumbo mailbox is designed to be mounted through walls from 5.5'' to 10 thick, and is compatible with common types of walls. Hardware is included so you can install your rent drop box easily.
KEY LOCK AND ANTI-FISHING: Our in-wall mail box contains a piece of jagged metal, making it impossible to reach and take out the items inside. The secured key lock will keep the objects secured in this wall deposit box.
FITS MULTIPLE ITEMS: This key drop box has an exterior dimension of 12.25'' x 6.5'' x 15'' to hold multiple objects for your office. The mail slot measures 9.25'' x 2.25'', making it ideal for envelopes with checks and cash.
GALVANIZED STEEL PIECE: The adjustable chute (5.5'' min and 10'' max) is made of galvanized steel, ensuring that your payment drop box is protected from rusting, making it the perfect through the wall dropbox for business.

Show Price

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