I’ve had two of these over the @9 nears we’ve been in our current home. Both of them had/have rust issues. The company was nice enough to send a replacement for our first one, but the second is similarly rusting.
That being said, my mail has never been stolen and I can let a few days of mail pile up in here without having to check each day. I don’t think the rust is effecting the performance yet and I will probably get another few years out of it before I have to replace it.