Basically, masonry is talking about any material that is put together in units and bound in addition to what is called mortar. Mortar is at short, the "glue" of these sorts of things. There are a myriad of different materials that can be used in brick mailbox, including granite, brick, https://ramsey-gibbs-3.technetbloggers.de/brick-mailboxes-classic-curb-appeal-with-lasting-durability