We've got a major database in SQL 2008 R2 that holds all of our client data and volunteer data and their relationships. I'd love to sync the volunteer contact info with our Exchange server (O365) using public folders or something similar. We're using Office 2010 locally.
I saw a couple of options with ContactGenie or Genius Connect, but haven't found anyone who has used those or something similar. I'm open to anything, but we're a nonprofit with a tight budget, so I'm limited to some degree.