Locking Mailbox Wall Mounted Vertical– Jssmst Mail Boxes with Combination Lock Large Capacity, 9.6 x 4.7 x 14.8 Inch, Black，SM-HPB005LB

Just what I was looking for, not to obtrusive, clean lines.

Maybe a little too light weight, but the real problem seems to be cold weather. I'm not talking the Antarctic just maybe less than 30 degrees and the key will not open the mailbox. For fear of breaking the key inside the lock you must defrost it in some fashion or wait until a warmer time. Luckily with security lacking, opening the top and reaching in with your fingers should allow you to retrieve your mail.

We returned this cheapo and bought a durobox which was waaaaaaaay better.