When you run 'git config --global user.email my@email.net'... where do you think that email goes if not in your git commits? Why do you say "my email is not on

When you run 'git config --global user.email my@email.net'... where do you think that email goes if not in your git commits? Why do you say "my email is not on the web" if you upload your commits to a public web host?