Ironically, the guy who closed this issue owns this project: https://code.google.com/p/sentimentally/ https://code.google.com/p/sentimentally/ "sentimentally

Ironically, the guy who closed this issue owns this project: https://code.google.com/p/sentimentally/ https://code.google.com/p/sentimentally/ "sentimentally is a tool that determines sentiment of your emails. Once determined, it helps you gauge your relationships with co-workers, customers, friends, or other individuals based on the tone of your conversations with these people."