make some of the email security settings apply on a per-email address rather than per-account basis

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Hello! I'm not sure if its the best place to put this, but I think it does pertain somewhat to code security in that it helps contributors protect their own information.

As someone with many email addresses attached to my GitHub account, some personal/private, and some publicly available, I would like to have more granular control over which ones will be automatically rejected if I accidentally author a commit with that email and push it to my account.

Is this something that's already been suggested?