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Mailbox
Post Mount
Address Numbers
Post Mount Mailbox
Adoorn’s non-locking Post Mount mailbox is built from durable, weatherproof steel for grab-and-go access—no key, no hassle.
Overview
Features
Specifications
Designed To Deliver
FREE SHIPPING
No fees. Just fast delivery.
LARGE CAPACITY
Handles more than just mail.
WEATHERPROOF
Built to outlast the elements.
Designed To Deliver
LARGE CAPACITY
Handles more than just mail.
WEATHERPROOF
Built to outlast the elements.
FREE SHIPPING
No fees. Just fast delivery.
LARGE CAPACITY
Handles more than just mail.
WEATHERPROOF
Built to outlast the elements.
FREE SHIPPING
No fees. Just fast delivery.
Your Daily Mail Ritual, Now Effortless.
From the crisp magnetic close to the flat slide-out base, every part of mail pickup just got easier.
Built to Beat the Weather
Designed with a 1.2° sloped roof, heavy-duty galvanized steel, and a rust-fighting finish built to outlast rain, sun, and whatever else rolls in.
Room for Days of Mail
Holds 2–3 days of mail and small packages—no cramming, no chaos. Just secure, spacious design made for how we get mail now.
Precision-Cut Sealers
A foam seal lines the interior, blocking out water and sealing every close—because weather shouldn’t get your mail first.
Looking for Added Security?
75% of Americans have faced mail theft in their homes. Adoorn offers locking functionality at no additional cost.
Adoorn in Real Life
Swipe right to get a feel for size, shape, and styling in real spaces.
Made to Do More
Slanted Roof for Rain
Smart 1.2 degree slope sends water off the back, not inside.
Attachable Mail Flag
Never miss a pickup—flag signals when you’ve got mail to send.
Heavy-Duty Galvanized Steel
Thick, weather-tough steel that resists rust and wear.
Secure Magnet Closure
A clean snap seals it shut—no slamming, no guessing.
Precision-Cut Foam Sealers
Foam lining locks out water and softens every close.
Receives Small Packages
A clean snap seals it shut—no slamming, no guessing.
FEATURED IN
Easy Access, Large Capacity
Adoorn’s non-locking post mount mailbox. Made to make mail retrieval effortless.
Easy Access, Large Capacity
Adoorn’s non-locking post mount mailbox. Made to make mail retrieval effortless.
How We Compare
Reinforced Weatherproof Sealing
Meets USPS Standards
Allows outgoing mail, meets size specs, passes weather-resistance testing and functionality testing
Multiple Color Options
Receives What Type of Mail
Holds How Many Days of Mail
External Size Dimensions
Max Package Size
Post Mount Mailbox
available colors
Receives mail + medium packages
2–3 days of mail
9.5" H x 9.5" W x 19.5" D
Receives packages:
16" x 8" x 7.5"
Competition
available colors
Receives mail + small packages
1 day of mail
8.8" H x 7" W x 19" D
Receives packages:
19" x 6.75" x 4"
How We Compare
Reinforced Weatherproof Sealing
Meets USPS Standards
Allows outgoing mail, meets size specs, passes weather-resistance testing and functionality testing
Multiple Color Options
Receives What Type of Mail
Holds How Many Days of Mail
External Size Dimensions
Max Package Size
Post Mount Mailbox
Mail + medium packages
2–3 days
9.5" H
9.5" W
19.5" D
16" x 8" x 7.5"
Competition
Mail + small packages
1 day
8.8" H
7" W
19" D
19" x 7" x 4"
Designed for Easy Assembly
Mounting Pattern Made Simple
The pre-drilled base lines up with most standard posts. Just match the pattern for your post and you're ready to go.
Put A Smile On The Face Of Your Home
Every screw and washer’s in the box—just grab a wrench and Phillips head, then follow our step-by-step guide for a quick, secure install.
Is it weather resistant?
Yes. We've built numerous features into the post mount mailbox to keep your mail and deliveries dry. It's designed with a 1.2 degree sloped top so rain & snow slides off the back, not inside. It has weatherproof foam lining around the door to keep our water. And the mailbox is made from heavy-duty galvanized steel with a rust-fighting powder coat finish to outlast rain, sun and whatever else rolls in.
Is this a premium mailbox?
Absolutely. The Adoorn Post Mount Mailbox is built to last, but designed for the wow. On top of the elevated design, it is made from heavy-duty galvanized steel, stainless steel hinges and rust & scratch resistant powder coat finish prevent rust, fading and wear.
What is the maximum size package that can fit in the mailbox?
The adoorn post mount mailboxes can receive mail, envelopes, polybag style packages and small rigid packages. The largest size rigid package that can fit inside the top opening is 8" x 7.5" x 16".
If you're looking for a solution to receive package deliveries too, we recommend bundling a post mount mailbox with one of our Package Boxes.
How do I install the mailbox onto a post?
It’s simple! For ease of installation and a guaranteed fit, we recommend purchasing one of our adoorn posts. Our post mount mailboxes can be installed into an adoorn post or most standard metal or wood mailbox posts. Installation hardware and easy-to-follow instructions come with the product. Our instructions include guidelines for height and set back requirements at your curb, but please contact your local post office if you have any questions!
Does this mailbox meet USPS requirements?
Our mailboxes abide by and follow all USPS regulations. Our installation instructions include guidelines for height and set back requirements at your curb. And, you can also include delivery instructions for deliveries to be placed in your mailbox.
Choose options
Customer Reviews
I love the mailbox. It holds regular mail and medium sized packages with ease. The only issue I had installing it was the screws for the flag would not fit. Luckily, I had a couple in my toolbox that fit perfectly.
Excellent heavy duty mailbox and Strong metal post. It was very well packaged. Nothing was damaged and it came with all the bolts and instructions. Highly recommend it. I put the metal post over a pressure treated 4x4 and buried it 2 feet deep.
Style of this box is everything and more but the functionality of it misses the mark. The weatherproof design is not so weatherproof because there are holes at the bottom of the box. In wet climates expect mail to be damp. In standard mailboxes the door to the box stops at 90 degrees so you don’t have to hold open the door. This box drops open at 180 degrees and smacks the post hard every time the mail carrier opens the box. I assume over time this will cause damage to the box and the post.
Beautiful & Sturdy