Intelligent voicemail message waiting system and method

An intelligent voice message status indication device for a single line of a telephone network includes a controller that responds to caller-ID signals to detect whether a mailbox contains a message, responds to a call-waiting signal to break communication with the voicemail system during message retrieval to capture an incoming call, and toggles multiple indicators associated with respective sub-mailboxes on a single line. The message waiting indicators may include respective unique audio, as well as respective unique, visual indication of message presence in one or more mailboxes. The voicemail servers of the network may be correspondingly partitioned to host multiple mailboxes and to provide unique outbound caller IDs to identify a mailbox having a message.