email confirmation for new signups

This is the "config.json" file. I am

{ "SECRET_KEY": "", "EMAIL_USER": "@gmail.com", "EMAIL_PASS": "16-letter 2-step verification app password generated by google" }

I have a site on Linode but it does not work. What do I do wrong? Is there anything else I need to do with the generated password except including it in the file above?