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America's Mailbox Headquarters

Indoor & outdoor commercial mailbox systems for USPS or private delivery, residential mailboxes, postal supplies, and specialty products--U.S. Mail Supply is the USPS approved industry standard.

Delivering mailbox solutions across the U.S.

U.S. Mail Supply, Inc. is the USPS approved industry standard in the sourcing & distribution of commercial & residential mailboxes, post office boxes, mail sorters, mail hampers and miscellaneous mailroom equipment, furniture, and supplies.

Our pricing is highly competitive and the products we carry are built to be deeply customizable for new construction or replacement purposes when needed. We are better equipped than anyone else in the industry to arm businesses, post offices, property managers, homeowner associations, housing authorities, and individuals with the perfect custom USPS or private delivery mailbox system.

Built right. Priced right. Buy online or request a custom quote for new or replacement mailboxes.
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Requirements for USPS mailboxes

USPS mailbox regulations require ALL new construction and major renovations to have USPS compliant STD-4C mailboxes. Buying from U.S. Mail Supply ensures you get the perfect commercial mailbox for your building and you are 100% compliant with all USPS mailbox requirements.

We always recommend checking with your local postmaster before making any purchase. If you need any assistance we're here to help you every step of the way.

Keeping USPS deliveries safe and secure nationwide

U.S. Mail Supply products can be found in thousands of communities throughout the United States, including apartment buildings, condominiums, colleges & universities, office buildings, medical centers, military bases, government buildings, and more. With customers in every state, we are THE USPS approved industry standard.

Mailboxes, mailroom equipment & postal products - delivered with the BEST customer service

If you're looking for mailboxes, mailroom equipment, or lockers, you're in the right place. We know many of the products we sell can be confusing after all, how many mailboxes, collection boxes, mail sorters, etc. is the average person going to buy in their lifetime? Not many, that's for sure. So, we have a ton of information on our website. If you can't find the answers to your questions, just give us a call.

Our friendly and knowledgeable customer service staff is here to help with any questions you may have. Every member of our team goes through two months of rigorous training before they are even approved to answer a phone call, so you'll get all the information and guidance you need to make sure you get the right product for your application.

Outdoor pedestal mailboxes & mail kiosks

Our outdoor pedestal style mailboxes are built to withstand all types of weather and come in a variety of styles, sizes, and configurations. We have stainless steel and aluminum mailboxes that won't rust in the rain, decorative cluster mailboxes that are perfect for an apartment complex or other multi-family living facility, and other styles to keep your mail and packages safe and secure.

4C horizontal mailboxes & indoor mailboxes

4C horizontal mailboxes meet USPS regulations and high postal security standards to keep your mail safe and protecting you from identity theft. These durable, wall mounted mailboxes will easily last for decades. To make ordering easier, use our 4C Horizontal Mailbox Design Assistant for a customized mailbox configuration and price quote. Ideal for multi-tenant housing, hospitals, military bases, and universities, U.S. Mail Supply indoor mailboxes give everyone at your location a convenient place to get their mail and are designed for security and vandal resistance. Our indoor mailbox solutions includes:

  • Horizontal
  • Vertical
  • Custom
  • Private use Horizontal Mailboxes with Rear Loading or Front Loading Options