non-verbal communication and question du jour

I wish i had an ability to distinguish when someone (via electronic medium, email, no voice just words) asks me how i am: is it a polite small talk question or he really wants to know how i really am, i.e. how i feel?

According to dr. Albert Mehrabian, 55% of face-to-face communication comes through non-verbal, 38% tone of voice and only 8% are words. Now you know why I cannot see, hear or decode when someone asks me via email, text or social media narrative how i am: is it just a small talk /phatic communication function, or the person is really interested in how i am?