EDIT: To check if user is ‘made-up’ or ‘real’, just send an email verification by calling FirebaseAuth. instance. currentUser. sendEmailVerification() and ask user to click the link sent in their email , if user is able to perform this action then email exists otherwise it’s ‘made-up’.
Read moreHow do you get current logged in on Flutter?
In the following steps, you will be able to build app a get current user.
Read moreHow do you get a user email in Flutter Firebase?
Follow the steps to Firebase email and password authentication in the Flutter application.
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