We were rather disappointed with the Post Mounted Mailbox. The size is great (it's large enough to hold both mail and packages), the price was good, but the mailbox is not very sturdy. We mounted it on a sturdy platform on a steel post, but the bottom of the mailbox flexes more than it should. We suspect it wouldn't survive much of a bump. The door closes securely and the mailbox sheds rain reliably, both pluses, but the quality is just so-so.