You can customize the email template that is used in Authentication section of the Firebase console, on the Email Templates page. See Email Templates in Firebase Help Center. It is also possible to pass state via a continue URL to redirect back to the app when sending a verification email.
Read moreHow do I recover my email from Firebase?
To get the email address of the currently logged in user, use the getAuth function . For email and password / simplelogin you should be able to get the email like this: ref = new Firebase(‘https://YourFirebase.firebaseio.com’); email = ref. getAuth().
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