The best in-wall mail box depends on whether you need a complete locking compartment or only a through-wall chute. The Durabox D700 is best for receiving and storing deposits in one unit, while the Durabox D100 suits thin items when you already have a secure collection area on the other side. The Plugsharge model adds a rain cover, and the Pochar is a door-mounted alternative. Product details for the xydled mailbox are limited, so check its dimensions and installation method before choosing it.
| Product | Best For | Key Distinction |
|---|---|---|
| Durabox D700 | Secure mail and deposit storage | Locking compartment and anti-fishing baffles |
| Durabox D100 | Thin items and simple pass-through | Adjustable chute for walls 4.5–8.5 inches thick |
| Plugsharge Through-the-Wall Mailbox | Outdoor-facing installations | Rain cover and locking retrieval door |
| xydled Wall-Mounted Mailbox | Buyers considering a basic lockbox | Listed as key-locking and wall-mounted |
| Pochar Door Drop Box | Door installation instead of wall installation | Fits wooden doors up to 1.75 inches thick |
Durabox D700 Through-the-Wall Deposit Safe

Best for: Homes, offices, and businesses that need a complete through-wall drop box with a locking compartment. The listed size is 17 by 13 by 7 inches, and the chute-style slot accepts mail and deposits from one side for retrieval on the other.
Its listed construction includes 14-gauge cold-rolled steel, a powder-coated finish, a reinforced double steel door, a piano hinge, and a tubular lock with keys. Two internal metal baffles are designed to make fishing contents through the slot more difficult. These features make it a stronger choice than a chute alone when the deposited items need to remain in a locked compartment.
Limitation: The product information does not specify an adjustable wall-thickness range. Confirm that its installation dimensions suit your wall before purchasing.
Durabox D100 Adjustable Drop Chute

Best for: Buyers who need a pass-through slot for thin mail, payments, or other small items and have a secure collection point behind the wall. The chute accepts items up to 1 inch thick, including listed examples such as keys and car remotes.
The two-piece steel design adjusts for wall thicknesses from 4.5 to 8.5 inches. It is made from 14-gauge powder-coated steel and includes eight pre-drilled holes and mounting hardware. Choose this model if an adjustable sleeve matters more than having an integrated locking storage compartment.
Limitation: This is a drop chute, not a complete locking mailbox. It is intended for non-bulky items, so avoid it if you need to store larger packages or secure contents inside an included compartment.
Plugsharge Through-the-Wall Locking Mailbox

Best for: Installations where the outside opening may be exposed to rain or moisture. The listed design combines an anti-fishing chute and locking retrieval door with a stainless steel rain cover and galvanized steel chute.
The adjustable sleeve fits walls from 4.25 to 8.25 inches thick, according to the product details. That range makes it a practical option for buyers measuring a wall before installation. Choose this model if outdoor exposure and an included retrieval door are priorities.
Limitation: The listing does not give a maximum item thickness or overall storage capacity. Check those details if you plan to deposit anything beyond ordinary mail and documents.
xydled Key-Locking Wall-Mounted Mailbox

Best for: Buyers exploring a basic wall-mounted mailbox with a key lock. The product name identifies it as a black, wall-mounted, locking mailbox, which may suit someone who does not specifically need a through-wall chute.
It is included as an alternative rather than a direct match for in-wall installation. The available product details do not describe its dimensions, construction, capacity, weather protection, or mounting requirements. Review those specifications carefully and confirm whether the mailbox is designed to pass through a wall before selecting it for an in-wall project.
Limitation: The supplied information is limited to the product name, so key installation and security details cannot be compared with the other models.
Pochar Through-the-Door Drop Box

Best for: Buyers who want indoor access to mail or deposits but can install the unit through a wooden door rather than a wall. It is listed for doors up to 1.75 inches thick and can accept letters, envelopes, payments, newspapers, or keys.
The box is made from 1.4 mm cold-rolled steel and has a key lock and jagged anti-fishing baffle. It is described for residential mail collection and uses such as rent payments, key drop-offs, and after-hours deposits. Choose it if avoiding an exterior trip to collect items is the priority and door mounting works for your property.
Limitation: This is a through-door product, not an in-wall mailbox. Avoid it if the installation must be through a wall or if your door exceeds the stated thickness.
Buying Guide: How to Choose an In-Wall Mail Box
Do you need a chute or a locking compartment?
A chute passes items through a wall, but it may not include a secure place to store them. The Durabox D100 is a chute-only option for thin items. A complete unit such as the D700 or Plugsharge model includes a locking retrieval area, making it better suited to mail or deposits that should remain secured after delivery.
How thick is the wall?
Measure the finished wall thickness at the intended installation point and compare it with the product’s stated range. The D100 fits 4.5–8.5 inches, while the Plugsharge model lists 4.25–8.25 inches. Do not assume that products with similar names have the same sleeve dimensions.
Will the exterior opening be exposed to weather?
For an opening facing outdoors, look for a listed rain cover or other weather-protection details. The Plugsharge listing specifically describes a stainless steel rain cover and galvanized steel chute. The supplied details for other products do not provide the same specific outdoor-protection information.
What will you deposit?
Match the opening and storage design to the intended items. The D100 is specified for non-bulky items up to 1 inch thick. For checks, letters, or business deposits that need a locking retrieval compartment, compare complete drop-box designs instead of relying on a chute alone.
Frequently Asked Questions
What is an in-wall mail box?
It is a mail receptacle or drop chute installed through a wall, allowing items to be deposited from one side and collected from the other.
Is a through-wall chute the same as a locking mailbox?
No. A chute provides a passage for items. A locking mailbox or deposit box also provides a secure compartment with a retrieval door or lock.
Which listed option fits the widest stated wall range?
The Durabox D100 lists compatibility with wall thicknesses from 4.5 to 8.5 inches. Check measurements against the actual product before installation.
Can these products accept packages?
The listed details generally describe mail, documents, payments, and other small or non-bulky items. Confirm the opening size and capacity before expecting a product to accept packages.