Hey so you actually can make it so an email address doesn’t log into the account, it’s how I stopped one particularly persistent hacking attempt when they finally managed to crack my password but were stopped by 2fa. Go to your profile > account info > sign in preferences, then as long as you have an alias email on the account you can deselect ones that you don’t want to be able to be used as a log-in.
Hey so you actually can make it so an email address doesn’t log into the account, it’s how I stopped one particularly persistent hacking attempt when they finally managed to crack my password but were stopped by 2fa. Go to your profile > account info > sign in preferences, then as long as you have an alias email on the account you can deselect ones that you don’t want to be able to be used as a log-in.