In my own personal experience, I notice a dramatic and direct link between my mental state and how my gut feels (potentially vice versa as well), so this tracks for me. It's exciting to see all of this research coming out about new novel ways which we may improve mental health treatments.
I frequently get emails from people who have skimmed my address from my profile (usually by looking through the stars or watchers of popular repos). I ended up setting my public email on GitHub to an alias so I could filter it out.
That would be an ideal implementation, though I wonder if part of the reason it hasn't happened is similar to the reason that the Taptic Engine hasn't been implemented on iPads, which if I understand correctly is the difficulty associated with scaling to larger screen sizes.