[coldtea]

>1) Before email I had more letters and phone calls

Way less than the number of work emails people get -- and mostly addressed to specific departments and roles. A mainframe developer in 1970 would not get 30 letters and phone calls per day.

>2) If you disrupt your flow to answer emails and that is not mandated by your manager, that is your fault.

You'd be surprised.

>3) If you disrupt your flow to answer emails because your manager insists, then that is your managers fault.

Which, even though a fact, is no relief.