Best Plastic Security Mailboxes in 2026
Daisy
Last Updated: Feb 9, 2026
Daisy
Last Updated: Feb 9, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
USPS Approved Oasis 360 Locking Mailbox is 11.3 in. W x 11.5 in. H x 20 in. D
Accepts parcels 9.5 in. W x 12.6 in. L x 1.5 in. H to 9.5 in. W x 3.5 in. L x 2.5 in. H
Dual door locking parcel mailbox, two doors for easy access
Galvanized steel construction that is fully powder coated inside and out for added corrosion resistance
Predrilled 4 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)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Postmaster General approved and patented design allows delivery of mail bundles and small parcels - perfect for Internet and catalog shoppers
Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for durability and long life
Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other corrosion resistant materials
Suitable for installation into a pilaster or column - the entire outer shroud is one piece to resist moisture and the elements
18-Inch d x 14-Inch h x 11.5-Inch w, 23-Pound - Use Adapter Plate 7530-10 for 4x4 wood post installation
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Constructed from heavy gauge galvanized steel for durability with a heavy gauge door and lock reinforcement
Anti-pry three-point lock engagement mechanism for extra high security
Doors fitted with weather-tite rubber seals and has stainless steel hinges and hardware
Concealed outgoing mail clip
Accepts parcels 9. 75-in x 6. 5-in x 2-in to 9. 75-in x 4-in x 2. 75-in
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Constructed from heavy gauge galvanized steel for durability with a heavy gauge door and lock reinforcement
Anti-pry three-point lock engagement mechanism for extra high security
Doors fitted with weather-tite rubber seals and has stainless steel hinges and hardware
Concealed outgoing mail clip
Accepts parcels 9. 75-in x 6. 5-in x 2-in to 9. 75-in x 4-in x 2. 75-in
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Postmaster General approved and patented design allows delivery of mail bundles and small parcels - perfect for Internet and catalog shoppers
Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for durability and long life
Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other corrosion resistant materials
Suitable for installation into a pilaster or column - the entire outer shroud is one piece to resist moisture and the elements
18-Inch d x 14-Inch h x 11.5-Inch w, 23-Pound - Use Adapter Plate 7530-10 for 4x4 wood post installation
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Postmaster General approved and patented design allows delivery of mail bundles and small parcels - perfect for Internet and catalog shoppers
Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for durability and long life
Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other corrosion resistant materials
Suitable for installation into a pilaster or column - the entire outer shroud is one piece to resist moisture and the elements
18-Inch d x 15-Inch h x 11.5-Inch w, 23-Pound - Use Adapter Plate 7530-10 for 4x4 wood post installation
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Anti-fishing security comb keeps mail safe
Dual outgoing mail clips discreetly hidden behind hopper door with a magnetic intake door closure
Galvanized steel lock with reinforced bracket with pry resistant retreival door
Accepts envelopes and small parcels sized 12. 5 in. x 9. 5 in. x 0. 5 in. to 8-5/8 in. x 5-3/8 in. x 1-5/8 in.
Mailbox is 11. 3 in. W x 11 in. H x 18. 2 in. D with predrilled 4 in. x 10 in. mounting holes in floor allowing for easy installation
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ❌ |
Product 1: Postmaster General approved and patented design allows delivery of mail bundles and small parcels - perfect for Internet and catalog shoppers
Product 1: Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for durability and long life
Product 1: Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other corrosion resistant materials
Product 1: Suitable for installation into a pilaster or column - the entire outer shroud is one piece to resist moisture and the elements
Product 2: Can be used to attach Architectural Mailboxes post mount Mailbox to a wooden 4x4 post
Product 2: Multiple bolt hole patterns, including 4x10 bolt hole pattern and 11-1/4″ side flange mount screw pattern
Product 2: Can be installed onto a wooden post as a top mount, side rail mount and front cantilever mount to suit your needs
Product 2: Durable galvanized steel construction
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Architectural Mailboxes | 8 |
We've carried out a comprehensive analysis of 5,925 reviews on security mailboxes, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select security mailboxes priced around $117.21, with top brands including and
Our team of expert editors reviewed these high-quality items and handpicked the top 8 security mailboxes for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .
We are dedicated to assisting our users in finding the right mailboxes Products based on their needs, saving them considerable time when choosing which security mailboxes to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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