Knowing the person's name is a good start, of course, but finding his/her actual email address would be even better...
Well, just stumbled across an ingenious search method contributed recently by StackOveflow's user "Nikhil"
SYNOPSIS :
("This method worked in August 2017")
- 1.Copy and paste the next line into your browser (feel free to bookmark it):
https://api.github.com/users/xxxxxxx/events/public.
- 2.Find the GitHub username for which you want the email:
Replace the xxxxxxx in the URL with the person's GitHub username.
Hit Enter.
- 3. Press Ctrl+F and search for “email”.
Worked for me !