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 What is the typical installation time for a mailbox purchased with that option on the website? How do I install my mailbox? What are the lead times? Comments 0 comments Please sign in to leave a comment.