1.Email issues.
Thanks for reaching out about your concerns. I will be pointing you to a section of the Travis CI documentation, specifically https://docs.travis-ci.com/user/notifications#Email-notifications. There you can follow instructions on setting the exact email you want to receive email notifications. Since you already have your secondary email address registered on github you only need to assign this secondary email to your git config to receive notifications there.
git config user.email "[email protected]”
Or set the email for all of your git repositories: