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Commercial Mailboxes - USPS & private delivery

If you’re shopping for a commercial mailbox, choose US Mail Supply. Our online mailbox store is convenient if you know exactly what you want, but if you don’t, our friendly, knowledgeable staff will make orders over the phone easy. Need a custom configuration? We can help you with that too!

US Mail Supply specializes in mailboxes for every application – homes, offices, apartment buildings, colleges, military facilities, medical centers, and more.

Commercial Mailboxes for USPS Delivery

Commercial Mailboxes - USPS Delivery

Browse all commercial indoor and outdoor mailboxes built for USPS access. Some models are USPS approved and others are USPS approved for replacement only. Always check with your local postmaster for local requirements for USPS commercial mailboxes.

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Commercial Mailboxes for USPS Delivery

Commercial Mailboxes - Private Delivery

Shop all commercial mailboxes for private delivery or centralized distribution. Many mailbox models are built for USPS access by default but also offer models for private distribution.

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Cluster Mailboxes for Commercial Buildings

Cluster Mailboxes

Unique vintage style lockable decorative cluster commercial mailbox units are a perfect addition for luxury apartment complexes or condos & town house subdivisions.

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Commercial Outdoor Mailboxes

Outdoor Commercial Mailboxes

Outdoor commercial mailboxes for sale at U.S. Mail Supply include curbside pedestal mount cluster mailboxes and large contemporary decorative metal mailboxes.

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Commercial Indoor Mailboxes

Indoor Commercial Mailboxes

Shop recessed, wall-mounted indoor horizontal and vertical commercial-grade mailboxes for small and large businesses and multi-unit residences.

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Commercial Horizontal Mailboxes

Horizontal Mailboxes

Shop recessed, wall-mounted indoor horizontal and vertical commercial-grade mailboxes for small and large businesses and multi-unit residences.

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Commercial 4C Horizontal Mailboxes

4C Horizontal Mailboxes

Steel and aluminum heavy metal construction makes commercial USPS approved 4C horizontal mailboxes a tough-as-nails option for apartments, offices, condos, schools, municipal buildings and multi-family residences.

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Commercial 4C Depot Mailboxes

4C Depot Mailboxes

US Mail Supply offers secure locking 4C Horizontal depot mailboxes for apartments and business parks. They come in many styles and sizes – from decorative style free-standing mailboxes to classic style commercial mailboxes.

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Commercial 4C Pedestal Mailboxes

4B+ Vertical Mailboxes

We offer metal commercial vertical mailboxes from 3 slots to 7 slots. Recess wall mount and surface mountable options available.

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Commercial Postal Drop Boxes

Postal Drop Boxes

Packages and letters are safe in pedestal-mounted secure, locking commercial drop boxes and letter lockers available for sale from U.S. Mail Supply.

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USPS Approved Commercial Mailboxes

USPS Approved Mailboxes

All USPS approved mailboxes - these units are manufactured to comply with USPS standards. But it's always a good idea to check with your local postmaster for USPS requirements in your area before installation.

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Commercial Office Mailboxes

Office Mailboxes

Shop metal office mailboxes for employees, built tough against heavy use in hectic commercial environments.

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USPS Commercial Mailbox Requirements

USPS commercial mailbox requirements dictate all new construction and major renovations must meet STD-4C specifications. New STD-4C specifications meet ADA standards and outline new size dimensions. USPS approved commercial mailboxes ensure safe delivery of mail and parcels, and are perfect for strip malls, office buildings, and more.

 

Commercial USPS delivery & private delivery Shop indoor and outdoor mailboxes for apartment complexes, condos, offices, colleges, or local businesses. Choose high end vintage style large cluster mailboxes or simple small indoor lockable horizontal mailboxes for a lobby area or entryway. Indoor Invest in quality Our inventory features horizontal and vertical indoor metal mailboxes for commercial buildings and businesses. Equip a small apartment complex or an entire university with secure storage for mail, internal documents or packages - USPS approved or private use options available. Mailroom Totes, shelves, sorters, and more We supply professional mailroom supplies and equipment for commercial and municipal buildings. Choose from our wide selection of mailroom totes, sorters, shelves, carts, and more. 4C Horizontal USPS 4C horizontal & 4C depot style boxes We supply Florence 4C horizontal and 4C depot style mailboxes for commercial and municipal buildings for a highly secure option. Horizontal 4C mailboxes are USPS approved (STD-4C) and 4C depot style mailboxes are for private deliveries only.
USPS Approved Commercial, Apartment, & Residential Units The U.S. Postal Service will only deliver to your mailbox if it's up to their standards - including box size, location, slot dimensions and identification info. Our USPS approved mail boxes include easy installation instructions to ensure you meet all official guidelines. Residential Quality one-time purchase Cheap home mailboxes are flimsy and put your belongings at risk. For single-house rentals or individual home owners, a metal mailbox poses the best security and defense. Choose a wall mounted mail house or traditional locking box with post. Outdoor Apartments, schools, or businesses Outdoor metal mailboxes with secure locking options protect possessions from theft and harsh weather. Choose decorative or standard cluster box units or locking residential mailboxes (USPS approved or for private use only). Drop Boxes Parcel & package receptacles Florence drop boxes for parcels, packages, and mail are always sturdy and secure. Your packages and letters will be kept safe until your mailman arrives to collect the contents.

Why Buy from US Mail Supply?

US Mail Supply has been a nationwide leader in commercial mailboxes for decades, providing expert guidance and competitive pricing for property owners, contractors and facility managers. Our team goes beyond selling products to help you navigate USPS regulations, select the right mailbox for your property and configure layouts to meet tenant capacity and accessibility requirements.

  • A large inventory of USPS-approved and private-use mailboxes, ready to ship
  • Expert support on regulatory compliance and installation planning
  • Competitive pricing with bulk discounts and price-match guarantees
  • Options for custom configurations to fit your exact building specifications

Our goal is to make buying and installing commercial mailboxes straightforward and stress-free.

Make sure to choose the right mailbox

Don't worry, we can help you figure out what's best and most cost efficient for your space. A representative at U.S. Mail Supply will help you figure out what is required for USPS or private delivery, the number of units you need and any information required for installation.

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