There are secure services for IM/VOIP and maybe email(npt sure how secure) and of course TOR. Some are very easy to use like Redphone/textSecure which integrate

There are secure services for IM/VOIP and maybe email(npt sure how secure) and of course TOR. Some are very easy to use like Redphone/textSecure which integrate transparently with android calls/meessaging. As far i can understand, they didn't grab much popularity. So i'm not sure ease of alone is enough. I'm not really a marketing person too, just interested in it, so i don't think i could help much. Anyway, best of luck with the project.