The invention relates to a device for sending and receiving electronic files, which contain metadata having an addressee's electronic address. The device includes an internal module and an external module for sending and receiving electronic files. The external module is associated with a building and placed in a location accessible to an operator, for example integrated into a pre-existing interphone device. These modules are interconnected to receive and transmit data and are commonly powered by Power over Ethernet (PoE) technology. This technology also allows the addressee's electronic address contained in the metadata of the files received by the external module includes a MAC address uniquely associated with the addressee's internal module. In the case of multiple internal modules in the same building, a switch device to which several Ethernet ports are connected routes the file to the correct internal module.