Hi, here is the link for anyone interested-
my writeup on replacing the PartnerMail Short version- client didnt like his PartnerMailVS and wanted voicemail-to-email so I set up a VoIP server connected to 4 free extension ports that pretends to be a PartnerMail. Works great.
I've already noticed some resistance to VoIP but it's cool, everybody has an opinion. I'll stick around and answer what I can, and you all are welcome to PM me if you have any VoIP or Asterisk questions...