I don't want all those beds taking up space in my house so I hide them in a basement. I often do something like this with with extra beds if I want my Sim to advertise for a roommate and she has one or more pets (the game requires a regular bed for all Sims, including pets, plus at least one extra before it will allow you to advertise for a roommate. Just as an experiment maybe you could try hiding a regular mailbox somewhere on your lot, like in a basement, and keep the apartment-style mailbox to give your lot the appearance you want. I'm not sure why it would work there and not on any other residential lot unless it has something to do with the Spice Market neighborhood? If you have the Get Together EP there is a nice mailbox that has a similar appearance that could blend-in well with a wall. are correct, the Old Salt House does have the apartment-style mailbox.Information, Guides and Announcements for the EA app.
