Top 10 Locked Mailboxes for Outside – Post-Mount Mailboxes

As an Amazon Associate I earn from qualifying purchases.

1. Mail Boss


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

Mail Boss #ad - Accessories: includes concealed outgoing mail clip, 3 keys, and required installation hardware. 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.

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. Usps approved full-service residential locking security mailbox prevents mail-identity theft; Stainless steel hinges for ease of use. Does not include or require Mounting Plate.
BrandMail Boss #ad
ManufacturerMail Boss #ad
Height11.25 Inches
Length21 Inches
Weight22 Pounds
Width10.75 Inches
Part Number7506
WarrantyLimited Lifetime



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

ARCHITECTURAL MAILBOXES #ad - Dual door locking parcel mailbox, two doors for easy access. H to 9. 5 in. X 10 in. Mounting holes in floor allows for easy installation. Hardware and mounting bracket may be required to mount to posts not manufactured by Architectural Mailboxes not included. Predrilled 4 in. H. Accepts parcels 9. 5 in. D. Galvanized steel construction that is fully powder coated inside and out for added corrosion resistance. W x 12. 6 in. W x 11. 5 in. W x 3. 5 in. L x 1. 5 in. H x 20 in. L x 2. 5 in. Usps approved oasis 360 locking mailbox is 11. 3 in.
ManufacturerArchitectural Mailboxes #ad
Height11.5 Inches
Length20 Inches
Weight15.8 Pounds
Width11.3 Inches
Part Number6300B-10
WarrantyLimited lifetime.

3. Gibraltar Mailboxes


Black, Large, Gibraltar Mailboxes MLM16KB1 Marshall Locking Mailbox

Gibraltar Mailboxes #ad - Match with any gibraltar Mailboxes post with the designation letter code C. Mounting hardware sold separately. Magnetic latch keeps door securely closed. Internal mail clip for outgoing mail included. Two keys provided for access to delivered mail. Aluminum outgoing mail flag. Painted in an attractive glossy powder-coated finish for extra protection against weathering. Rust-resistant galvanized steel construction. Capacity: 1475 Cubic Inches. Concealed locking compartment protects mail from theft.
BrandGibraltar Mailboxes #ad
ManufacturerSolar Group, Inc. #ad
Height11.8 Inches
Length20 Inches
Weight10 Pounds
Width11.7 Inches
Part NumberMLM16KB1
Warranty90 Day Limited



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 #ad - Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for durability and long life. Postmaster general approved and patented design allows delivery of mail bundles and small parcels - perfect for Internet and catalog shoppers.

Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other corrosion resistant materials. 18-inch d x 14-inch h x 11. 5-inch w, 23-pound - use adapter Plate 7530-10 for 4x4 wood post installation. Suitable for installation into a pilaster or column - the entire outer shroud is one piece to resist moisture and the elements.
ManufacturerArchitectural Mailboxes #ad
Height14 Inches
Length18 Inches
Weight5.91 Pounds
Width11.5 Inches
Part Number6200B-10
Warranty1 year manufacturer limited warranty.

5. Mail Boss


Mail Boss 7526 Mail Manager Street Safe Locking Security Mailbox, Black

Mail Boss #ad - Usps approved. Secure access door with commercial grade high security 12 disc wafer lock deters drilling and picking. Bi-cam anti-pry latch locking mechanism featuring a chrome-alloy tempered steel hook cam. Rear locking access door 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.
BrandMail Boss #ad
ManufacturerEpoch Design LLC #ad
Height11.06 Inches
Length21.48 Inches
Width10.83 Inches
Part Number7526
WarrantyLimited lifetime.



Black, KYODOLED Locking Mailbox Wall Mounted,Locked Mailboxes for Outside,Mail Box with Key Lock,Large Capacity Mailbox with Newspaper Compartment,15.3 x 12 x 4.7 Inch

KYODOLED #ad - Large capacity - ample space for various types of mail, including nespaper and rolled magazines. 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. Newspaper collect:mail box have a Oval shape newspaper bucket, magazines, can hold large envelopes, padded envelopes and so on. 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.
ManufacturerGT-MB-B-L-YBLACK #ad

7. SereneLife


Commercial Rural Home Decorative & Office Business Parcel Box Packages Drop Slot Secure Lock- Serenelife SLMAB04 , White , 10.2’’ x 12.2’’ x 3.6’’, Modern Wall Mount Lockable Mailbox, Outdoor Galvanized Metal Key Large Capacity

SereneLife #ad - Residential or office use: aesthetic posts, commercial or business, classic rural and modern apartment. Large capacity: the lockable wallmount mailbox duty are holding multi mailings, newspaper, magazines, small parcel, paperwork, group mail, package, and post office deliveries.

Weatherproof: outdoor mountable mailboxes are made with high quality galvanized steel magnetic cover, black powder coated that locked mails from heavy rain and deliberate theft. This is designed to prevent from fishing or stealing private property. This is a universal mount mailbox in any walls or flat wall surface. Easy installation: it has pre-drilled holes and mounting screw for solid attachment in the front porch of home or office.

This measures 102’’ x 12. 2’’ x 3. 6’’ wxdxH. Decorative bin door slots: though drop box is lock, parcels, the slot can allow payments, outgoing mail and box packages to be inserted since it has an easy access metal flap like an old envelope mailbox. In terms of its locking security, front door house, mounts vertical mailbox stylish look adds modern touch to exterior decor, mailbox has secure key lock with two reserved key locks that is not easy to duplicate.
BrandSereneLife #ad
ManufacturerSound Around #ad
Height12.2 Inches
Length10.2 Inches
Weight3.52 Pounds
Width3.6 Inches
Part NumberSLMAB04
Warranty1 Year Limited

8. Mail Boss


Mail Boss Curbside, Wood Grain 7510 Mail Manager Locking Security Mailbox

Mail Boss #ad - Innovative baffle door accepts small packages and deters fishing, and patented anti-pry latch locking mechanism prevents leveraged entry. Dimensions: 21" d x 11. 25" h x 10 . 75" w. Includes concealed outgoing mail clip, 12-disc wafer lock, 3 keys and all necessary installation hardware. 14- and 16-gauge electro galvanized welded steel construction defends against vandalism, with an elegant wood-grain finish on the front face. Usps-approved full-service residential locking mailbox prevents mail-identity theft.
BrandMail Boss #ad
ManufacturerMail Boss #ad
Height11.2 Inches
Length21 Inches
Weight25 Pounds
Width10.8 Inches
Part Number7510
WarrantyLimited lifetime.

9. Mail Boss


Mail Boss 7206 Package Master Curbside Locking Security Mailbox | Black,Medium

Mail Boss #ad - Mail box dimensions – 21. 5" d x 12" w x 16. 5" h | weight – 53 lbs. Stainless steel hinges and powder-coated finish for optimum weather resistance. Since mail boss finishes are more textured than flat, use a soft bristle brush to clean.

Your purchase includes one mail boss Package Master Curbside Locking Security Mailbox in Black + Installation hardware | Mount post not included. Packages – 105” l x 3. 5” – 4. 5” w x 3. 5” – 4. 5” h | refer to product pictures for more dimensions. Capable of being mounted within a brick column, post mounted individually or in a cluster with the use of a 2 box, 3 box, or 4 mailbox spreader bar. Patented anti-pry latch locking mechanism in a 12- and 14-gauge electro-galvanized welded steel construction.
BrandMail Boss #ad
ManufacturerMail Boss #ad
Height16.5 Inches
Length21.5 Inches
Weight53 Pounds
Width12 Inches
Part Number7206
WarrantyLimited lifetime warranty against manufacturer defects.

10. Decaller


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

Decaller #ad - Details design: inclined cover on the top is waterproof, transparent cover make you know mails status in time. It is characterized by sturdy and unyielding to rust. Stainless steel: the material of mailboxes is stainless steel. Detailed instructions: the package includes a detailed instructions for convenient installation. Sturdy lock: decaller mailbox has sturdy key lock with 2 key for security, it can prevent mails theft. Large capacity: the size of mailbox is 15. 4" x 12"x 4. 8", it fits small boxes, magazines, padded envelopes and so on.
BrandDecaller #ad
Part NumberYXHPB2203N01