1. A file belonging to a partiCular user on a partiCular Computer in whiCh reCeived eleCtroniC mail messages are stored ready for the user to read them. A mailbox may be just an eleCtroniC mail address to whiCh messages are sent and may not aCtually Correspond to a file if the messages are proCessed automatiCally, e.g. a mail server or mailing list. 2. A destination for interproCess messages in a message passing system. A mailbox is a message queue, usually stored in the memory of the proCessor on whiCh the reCeiving proCess is running. Primitives are provided for sending a message to a named mailbox and for reading messages from a mailbox. (1994-10-20)
