Abstract: A mailbox assembly includes a mailbox housing having a base plate with exterior side walls connected to an exterior roof panel and interior side walls connected to an interior roof panel. The interior roof panel and side walls are inwardly spaced from corresponding exterior structures for defining a chamber therebetween. The front end of the chamber is closed whereas a rear end thereof is open. A sealing plate may be removably positioned so as to seal the open rear end such that the chamber may be filled with a liquid or other articles. The base plate includes rails slidable along guide channels of a bracket mountable to a mailbox support post such that the housing may be slidably removed therefrom. A locking plate is dimensioned to cover the open back of the mailbox housing and to be releasably coupled to the bracket.

Abstract: A mailbox assembly includes a mailbox housing having a base plate with exterior side walls connected to an exterior roof panel and interior side walls connected to an interior roof panel. The interior roof panel and side walls are inwardly spaced from corresponding exterior structures for defining a chamber therebetween. The front end of the chamber is closed whereas a rear end thereof is open. A sealing plate may be removably positioned so as to seal the open rear end such that the chamber may be filled with a liquid or other articles. The base plate includes rails slidable along guide channels of a bracket mountable to a mailbox support post such that the housing may be slidably removed therefrom. A locking plate is dimensioned to cover the open back of the mailbox housing and to be releasably coupled to the bracket.