Our Team Mailbox Experts in Waukesha, WI

Our friendly and knowledgeable team of experts at U.S. Mail Supply has been providing customers around the world with personalized service, sales, and support for over 20 years. If you have questions about a product, need help placing an order, or would like a custom mailbox quote or bulk order, give us a call!

Personalized Service

A U.S. Mail Supply team member will personally reach out to you to review and confirm your order before it is placed, answer any questions you may have, give custom product recommendations, and provide order status updates.

Expert Knowledge

With 20+ years of experience, we are better equipped than anyone else in the industry to arm businesses, post offices, property managers, contractors, homeowner associations (HOAs), housing authorities, and individuals with the perfect custom USPS or private delivery mailbox system.

Sales & Support

Our dedicated team assists clients through the entire sales process and offers tailored support for every project. Every member of our team goes through two months of rigorous training to ensure our customers get the best products for their unique application.

Competitive Pricing

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 also offer promotional pricing and special discounts for members who create an account with us.

USPS Approved Mailboxes

The U.S. Postal Service will only deliver to your mailbox if the unit is a USPS Approved Mailbox. These mailbox units must meet requirements including box size, location, slot dimensions, and identification information. Our USPS Approved mailboxes include easy installation instructions to ensure you meet all official guidelines. Call our team of experts for more information on USPS Compliance and Requirements.

Private Delivery Mailboxes

U.S. Mail Supply offers private-use mailboxes that can be wall-mounted, recessed, or pedestal-mounted outside your facility. With a variety of indoor and outdoor options, you'll find the perfect mailbox for your property. Not sure what you need? Our team of experts is here to guide you in choosing the right units for private mail delivery.

Outdoor Mailboxes

Shop outdoor mailboxes with durable metal construction and secure locking features to prevent your mail from weather and theft. Choose between a variety of decorative or standard CBUs (cluster box units) or locking residential mailboxes. We supply outdoor mailbox units for USPS mail delivery and private mail delivery.

4B+/ Vertical Indoor Mailboxes

4B+/ Vertical Indoor Mailboxes for commercial businesses and multi-family residential buildings are available in horizontal and vertical configurations. Choose from rear-loading or front-loading units, depending on your facility setting, and select a recess-mounted or surface-mounted installation option. All indoor mailboxes are available in brass, bronze, sandstone, green, and silver finishes.

Commercial Mailboxes

U.S. Mail Supply specializes in providing expert personalized service to help contractors, project managers, HOA, and property owners find the perfect mailbox for their property. Shop indoor and outdoor commercial mailboxes for offices, apartment complexes, schools, local businesses, and more.

Residential Mailboxes

U.S. Mail Supply offers residential and multi-tenant apartment mailboxes including outdoor cluster box units, horizontal indoor mailboxes, and traditional decorative outdoor mailboxes. We offer a wide range of USPS Approved community mailboxes suitable for multi-unit properties. Residential mailboxes are commonly used in neighborhoods, apartment complexes, condominiums, schools and dormitories, and more.

Cluster Box Units (CBUs)

4C Horizontal Mailboxes

All 4C horizontal mailboxes from U.S. Mail Supply meet U.S. Postal Service regulations and are designed to ensure your mail stays secure. 4C mailboxes can include larger compartments for package deliveries and come in various configurations to accommodate different property needs. Contact our experts to determine the perfect 4C mailbox for your commercial or residential property.

4C Depot Mailboxes

US Mail Supply provides high-quality indoor depot mailboxes at affordable prices. 4C horizontal mailboxes are perfect for facilities and communities where the USPS delivers to a single, centralized location. A master commercial lock grants facility managers simultaneous access to all compartments for easy mail distribution. 4C Horizontal Indoor Mailboxes from US Mail Supply can be customized to meet the needs of buildings, including colleges, medical buildings, universities, hotels, local businesses, and more.

Drop Boxes & Collection Boxes

Shop a wide range of drop boxes, letter locker collection boxes, delivery vaults, key keepers, and additional postal specialties. We supply pedestal, free-standing and wall-mounted drop boxes and collection boxes for all types of locations. Not sure which solution is the best for you? Call our experts and we will be glad to help you choose the best drop box or collection box for your location and application.