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Top 10August 2025

Best Locking Post Mounted Mailbox

We made a list of the top 10 Locking Post Mounted Mailbox based on verified reviews, popularity and other factors which we summarized for you in this list.

Best Choice

Mail Boss 7506 Mail Manager Curbside Locking Security Mailbox, Black,Large

Mail Boss 7506 Mail Manager Curbside Locking Security Mailbox, Black,Large

✓USPS Approved full-service residential locking security mailbox prevents mail-identity theft
✓QUALITY: 14- and 16-gauge galvanized welded steel construction defends against vandalism
✓SECURITY: Innovative baffle door accepts small parcels, packages, and a box of checks and also deters fishing
✓PATENTED: Includes patented Anti-Pry latch lock mechanism to prevent leveraged entry with a screwdriver & high security anti-drill, anti-pick 12-disc wafer lock
✓ACCESSORIES: Includes concealed outgoing mail clip, 3 keys, and required installation hardware

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12% Discount

Mail Boss 7536 Street Safe Latitude Locking Security Mailbox, Black

Mail Boss 7536 Street Safe Latitude Locking Security Mailbox, Black

✓FRONT AND REAR LOCKING access doors for safe retrieval of mail and parcels away from street traffic
✓INNOVATIVE baffle door accepts mail bundles and small packages allowing for true security to prevent phishing
✓PATENTED anti-pry latch locking mechanism featuring a chrome-alloy tempered steel hook cam
✓SECURE access door with commercial grade high security 12 disc wafer lock deters drilling and picking
✓USPS approved

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Hykolity Locking Mailbox, Curbside Security Mailbox with Combination Lock, Post Mount Lockable Mail-Box with Reflective Numbers, Black, Large, 21 in. D x 10.75 in. W x 11.25 in. H

Hykolity Locking Mailbox, Curbside Security Mailbox with Combination Lock, Post Mount Lockable Mail-Box with Reflective Numbers, Black, Large, 21 in. D x 10.75 in. W x 11.25 in. H

✓【Heavy Duty Mailbox】Made of Galvanized welded steel construction and rust-resistant powder coated finish, the post mount security locking mailbox provides strength, durability and stability for outdoor using.
✓【Mailboxes for Outside】Euipped with a password lock which is made of high-quality zinc alloy and has 1000 possible combinations, our lockable mailbox for outside is more reliable and safer.
✓【Unique Design】Concealed mail clip hidden behind hopper door with a magnetic door closure. With locking rear access door, the locked mailbox allows for easy and safe retrieval of mail and parcels.
✓【Accommodate Package Size】This Password Lock mailbox mailbox accepts packages up 10.6"D x 3.15"H x 5.5"W. Includes PVC board, 2 keys and required installation hardware. All hardware made from stainless steel and other corrosion resistant materials.
✓【Warranty】We aim for quality followed up with quality customer service directly provided by the manufacturer. We offer free-exchange for any quality problems within the warranty.

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24% Discount

Architectural Mailboxes 6300B-10 Oasis 360 Locking Parcel Mailbox, Extra Large, Black, 6300B-10

Architectural Mailboxes 6300B-10 Oasis 360 Locking Parcel Mailbox, Extra Large, Black, 6300B-10

ARCHITECTURAL MAILBOXES

✓Built Like a Tank: This heavy duty mailbox is made of galvanized steel, & built to last—perfect for anyone needing durable metal mail boxes for outside.
✓Rust-Resistant from Top to Bottom: This post mounted mailbox features a tough, black powder-coat finish, adding an extra layer of protection to this curbside mailbox.
✓Spacious, Not Oversized: Large mailboxes for outside offer plenty of room for mail, plus multiple packages—without looking bulky at your curbside.
✓USPS Approved Peace of Mind: Built tough this USPS Approved locking mailbox is one of the most reliable mailbox with lock for outside (includes 4 keys).
✓Install in Minutes: Fully assembled & ready to mount. Just note: mounting hardware comes with all Architectural Mailboxes' compatible posts, not the mail box.
✓Post "J" Compatible: Made to mount effortlessly on all Architectural Mailboxes posts marked with letter J.
✓Secure Magnetic Closure: Keeps mail box door tightly shut to protect your curbside mailbox deliveries from wind and rain.
✓Access from Your Side: The back door on this double door mailbox lets you retrieve mail without stepping into traffic—ideal for residential mailboxes on busy roads.
✓Designed in the USA: Thoughtfully engineered with a focus on durability, function, and style.

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Architectural Mailboxes 6200B-10 Oasis Classic Locking Post Mount Parcel Mailbox with High Security Reinforced Lock,Black,18.00 x 15.00 x 11.50 inches

Architectural Mailboxes 6200B-10 Oasis Classic Locking Post Mount Parcel Mailbox with High Security Reinforced Lock,Black,18.00 x 15.00 x 11.50 inches

Architectural Mailboxes

✓Built Like a Tank: This heavy duty mailbox is made of galvanized steel, & built to last—perfect for anyone needing durable metal mail boxes for outside.
✓Dry Mail, Every Time: Weather-Tite stripping around the door keeps rain, snow, & dirt out—ideal for long-lasting residential mailboxes for outside.
✓Built for Big Deliveries: This extra large mailbox offers oversized space for multiple large packages, plus all your other curbside mailbox deliveries.
✓USPS Approved Peace of Mind: Built tough this USPS Approved locking mailbox is one of the most reliable mailbox with lock for outside (includes 2 keys).
✓Simple Setup: Just attach the flag—assembly is quick & easy. Reminder: mounting hardware comes with all Architectural Mailboxes' compatible posts, not the mail box.
✓Post "H" Compatible: Made to mount effortlessly on all Architectural Mailboxes posts marked with letter H.
✓Secure Magnetic Closure: Keeps mail box door tightly shut to protect your curbside mailbox deliveries from wind and rain.
✓Modern Mailbox Style: Sleek, minimalist design - this black mailbox complements any home curbside.
✓Designed in the USA: Thoughtfully engineered with a focus on durability, function, and style.

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18% Discount

Architectural Mailboxes MailMax™ Heavy Duty, Modern Steel Metal Post Mounted Mail Box for Outside, Black, Large Curbside Mailbox for Packages with Magnetic Latch

Architectural Mailboxes MailMax™ Heavy Duty, Modern Steel Metal Post Mounted Mail Box for Outside, Black, Large Curbside Mailbox for Packages with Magnetic Latch

ARCHITECTURAL MAILBOXES

✓Built to Perform: This heavy duty mailbox is made of galvanized steel, & built to last—perfect for anyone needing durable metal mail boxes for outside.
✓Rust-Resistant from Top to Bottom: This post mounted mailbox features a tough, black powder-coat finish, adding an extra layer of protection to this curbside mailbox.
✓Spacious, Not Oversized: Large mailboxes for outside offer plenty of room for mail, plus multiple packages—without looking bulky at your curbside.
✓USPS Post Master General Approved: Mailbox is USPS approved, as required for all curbside delivery by U.S. Mail carriers - for smooth, uninterrupted service.
✓Install in Minutes: Fully assembled & ready to mount. Just note: mounting hardware comes with all Architectural Mailboxes' compatible posts, not the mail box.
✓Easy Installation: 4" x 10" mounting hole pattern fits all top-mount Architectural Mailboxes posts. (Hardware included with posts. Additional washers may be needed).
✓Secure Magnetic Closure: Keeps mail box door tightly shut to protect your curbside mailbox deliveries from wind and rain.
✓Modern Mailbox Style: Sleek, minimalist design - this black mailbox complements any home curbside.
✓Designed in the USA: Thoughtfully engineered with a focus on durability, function, and style.

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20% Discount

Architectural Mailboxes Reliant™ Secure, Locking USPS Approved Heavy Duty, Steel Metal Post Mounted Mail Box for Outside, Black, Large Curbside Mailbox with Magnetic Door

Architectural Mailboxes Reliant™ Secure, Locking USPS Approved Heavy Duty, Steel Metal Post Mounted Mail Box for Outside, Black, Large Curbside Mailbox with Magnetic Door

ARCHITECTURAL MAILBOXES

✓Hands Off Your Mail: A concealed locking compartment ensures your mail stays safe & out of sight in this secure mail box for outside use.
✓Weather Tough, Year-Round: Rain, snow, or sun—galvanized steel construction makes this mail box one of the most reliable metal mailboxes for outside use.
✓Spacious, Not Oversized: Large mailboxes for outside offer plenty of room for mail, plus multiple packages—without looking bulky at your curbside.
✓USPS Approved Peace of Mind: Built tough this USPS Approved locking mailbox is one of the most reliable mailbox with lock for outside (includes 2 keys).
✓Simple Setup: Just attach the mail clip—assembly is quick & easy. Reminder: mounting hardware comes with all Architectural Mailboxes' compatible posts, not the mail box.
✓Post "C" Compatible: Made to mount effortlessly on all Architectural Mailboxes posts marked with letter C.
✓Secure Magnetic Closure: Keeps mail box door tightly shut to protect your curbside mailbox deliveries from wind and rain.
✓Classic Look, Lasting Appeal: Iconic, timeless post mount mailbox style complements both new & historic homes, making it a versatile choice for any setting.
✓Designed in the USA: Thoughtfully engineered in the United States with a focus on durability, function, and style.

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Architectural Mailboxes 7680B-10 MB1 Mount Mailbox and In-Ground Post Kit, Medium, Bl

Architectural Mailboxes 7680B-10 MB1 Mount Mailbox and In-Ground Post Kit, Medium, Bl

ARCHITECTURAL MAILBOXES

✓Usps approved MB1 mailbox, in-ground post, hardware and installation instructions included
✓Fluted ABS mailbox mounting plate attaches to post to provide aesthetic design
✓2-part steel 53 inch in-ground post with heavy gauge steel connector for rigidity
✓Constructed of fully powder coated steel and ABS parts for longevity
✓Usps approved mailbox measures 6.9 in. W x 8.7 in. H x 20.2 in. D

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34% Discount

Adoorn Lockable Post Mount Mailbox | Small (Green). Size 12 x 12 x 18.5 (HxWxD) Anti-Theft Locking Mailbox with 2 Keys, Modern Mailbox with Flag, Weatherproof Mailboxes for Outside

Adoorn Lockable Post Mount Mailbox | Small (Green). Size 12 x 12 x 18.5 (HxWxD) Anti-Theft Locking Mailbox with 2 Keys, Modern Mailbox with Flag, Weatherproof Mailboxes for Outside

✓Size 12 x 12 x 18.5": (HxWxD) locking mailbox holds 2-3 days of mail. Easily accessed by mail carriers and delivery drivers, our post mount mailboxes for outside receive small and large envelopes, poly-bag style mailers and packages up to 16” x 10” x 2”.
✓Receive What You Buy - Prevent identity, mail and package theft. Stop porch pirates with our locking mail boxes for house outside. This post mounted mailbox features an anti-phishing panel and anti-pry latch. Keep out sticky fingers with Adoorn’s mail box.
✓Easy to Mount: Combine Adoorn’s residential mailboxes for outside with our adoorn post for mailbox (sold separately) or use your existing post. This mailbox has five different hole patterns to accommodate most posts (Not compatible with the post called “Mail Boss 7121” which Amazon’s algorithm continues to incorrectly recommend..uggg!). Our outside mailboxes can be installed quickly and easily.
✓Instantly Add Curb Appeal: Adoorn's outdoor mailboxes are designed to compliment home decor. This ocean blue mailbox includes a bright red mail flag for added charm. Our modern mailbox comes in a range of eye-catching colors.
✓Durable and Weatherproof: Our locking mailboxes are constructed from heavy-duty galvanized steel, stainless steel hinges and rust proof finish. This metal mailbox protects from rain and snow.
✓Chicago based small business. We are here to help answer any questions you may have!

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25% Discount

Architectural Mailboxes Mailsafe Plastic, Locking, Post Mount Mailbox, Compatibility Code C, RSKB00AM, Black, Large Capacity

Architectural Mailboxes Mailsafe Plastic, Locking, Post Mount Mailbox, Compatibility Code C, RSKB00AM, Black, Large Capacity

ARCHITECTURAL MAILBOXES

✓Hands Off Your Mail: A concealed locking compartment ensures your mail stays safe & out of sight in this secure mail box for outside use.
✓Rust-Proof, Worry-Free: Made from durable plastic, this mail box for outside stands up to rain, snow, & humidity without ever rusting.
✓Spacious, Not Oversized: Large mailboxes for outside offer plenty of room for mail, plus multiple packages—without looking bulky at your curbside.
✓USPS Approved Peace of Mind: Built tough this USPS Approved locking mailbox is one of the most reliable mailbox with lock for outside (includes 2 keys).
✓Install in Minutes: Fully assembled & ready to mount. Just note: mounting hardware comes with all Architectural Mailboxes' compatible posts, not the mail box.
✓Post "C" Compatible: Made to mount effortlessly on all Architectural Mailboxes posts marked with letter C.
✓Secure Magnetic Closure: Keeps mail box door tightly shut to protect your curbside mailbox deliveries from wind and rain.
✓Designed in the USA: Thoughtfully engineered in the United States with a focus on durability, function, and style.

Learn moreon Amazon

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