The Mail Box Store is a packing and shipping store with many locations across the U.S. Visit a store today!Browse a wide range of mailbox posts and mailboxes in various materials, styles, colors and sizes at Lowes.com. Here you will find one of the largest online selections of residential mailboxes for sale. Our inventory includes residential post-mount mailboxes, which you can order with or without a post. We also offer wall mount, locking, novelty, mail slots, stainless steel, and various decorative posts.