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 that follows USPS mailbox guidelines.
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.