Best Post-Mount Mailboxes Under $100 (2026)
We ranked mailboxes under $100 by a value score combining material quality (galvanized/steel), customer ratings, security features, weatherproofing, and post-mount compatibility
Top Picks
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1
Mail Boss curbside locking security mailbox
Locking residential mailbox with curbside mounting and anti-pry features. Durable steel construction protects mail and small parcels; customers note sturdy build and easy installation
- locking security features
- galvanized steel construction
- anti-pry latch mechanism
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2
Gibraltar Elite Post-Mount Mailbox, green, galvanized steel
Medium-capacity post-mount mailbox with rust-resistant galvanized steel and green powder-coat finish. Easy to install on various Gibraltar posts; suitable for magazines, small boxes, and padded envelopes. Customer note: easy installation and reliable functionality, with mixed opinions on door closure
- rust-resistant construction
- easy-post installation
- medium capacity
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3
Simplay3 Rustic mailbox with post mount combo
Rustic sandstone mailbox with tree branch post mount and 2 heavy-duty magnetic access doors for secure front and rear mail retrieval. Includes mounting hardware, post cover, and address numbers. Customers note easy assembly and sturdy, weatherproof build
- 2 magnetic access doors
- includes hardware and address numbers
- weatherproof, durable design
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4
Simplay3 Classic Mailbox & Post Mount Combo Kit
Stone gray/black residential mailbox with two magnetic access doors for secure front and rear mail retrieval. Includes mounting hardware, post cover, and address numbers. Customers note easy assembly, sturdy build, and weatherproof design
- dual access doors
- large capacity
- all-in-one kit with hardware and numbers
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5
Simplay3 Rustic Red Barn Mailbox with Post Mount Kit
Rustic red barn-style mailbox with a tree branch post mount and two magnetic access doors for front and rear retrieval. Includes mounting hardware, post cover, and address numbers; offers large capacity and sturdy weatherproof build. customers note easy assembly and clear instructions
- two magnetic access doors
- large capacity design
- includes address numbers and mounting hardware
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6
Simplay3 classic mailbox & post mount combo, black
Traditional post-mount mailbox with two magnetic access doors for front and rear retrieval. Includes mounting hardware, post cover, and address numbers; large capacity fits small boxes and newspapers. Customers note easy assembly, sturdy build, and weatherproof design
- two magnetic access doors
- weatherproof build
- includes essential installation accessories
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7
Simplay3 Classic Mailbox & Post Mount Kit
Traditional residential mailbox with two magnetic access doors and post-mount kit. Includes mounting hardware, post cover, and address numbers; designed for large capacity and weather resistance. Customers praise easy assembly and sturdy build
- dual access doors
- includes address numbers
- large capacity mailbox
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8
Simplay3 Classic Mailbox & Post Mount Kit
A two-door, post-mount mailbox with large capacity and weatherproof build. Customers note easy assembly and sturdy construction with secure front and rear access
- two access doors with secure retrieval
- large capacity for packages and newspapers
- weatherproof and durable construction
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9
Patriot Post Mount Mailbox by Architectural Mailboxes
Durable plastic post-mount mailbox with medium capacity. USPS approved for curbside use and designed to handle daily mail, magazines, and small packages. Customers note its spacious interior and lasting durability
- rust-proof plastic
- USPS approved
- easy installation
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10
Step2 MailMaster Plus Mailbox & Post
Weather-resistant post-mount mailbox with large interior for mail, magazines, and small packages. Durable plastic construction with secure magnetic door and included flag
- large interior fits large mail and magazines
- secure door with magnetic closure
- includes flag for mail pickup