There is such a Word, for the time being in Spanish. It is the English term used to designate the isolated mailboxes, or personal. Its literal translation would be something like "box enter", or box of inputs, i.e. "mailbox. It is used for individual mailboxes, since the street is called, in English, "mail box", or mail box. In his English term used in applications of mail programs, and is considered the Inbox of all emails.