These integration systems could provide you with more flexibility and convenience. Voice messages could be delivered straight to your electronic messaging account's mailbox, or even your VoIP service's own mailbox. Your electronic messaging client could also be used to dial numbers using your VoIP capabilities. Hell, some VoIP integration systems could even make your computer act as an answering machine, an automatic phone dialer, and a call spammer! The latter option can be accessed due to the pre-programmable state of these VoIP applications.