I ordered a mailbox online but I didn't receive the numbers? Matt Sprague July 13, 2018 14:29 Updated Follow Go to the following website and enter your online order number:mymailboxorder.com/freembnumbers Related articles Do you install with concrete? What if I ordered a mailbox installation but I live in a gated community? What is the typical installation time for a mailbox purchased with that option on the website? Placing an order for a mailbox or post replacement with installation. Charleston Mailbox Assembly Instructions Comments 0 comments Please sign in to leave a comment.