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 a user email in Flutter Firebase?
Follow the steps to Firebase email and password authentication in the Flutter application.
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 I authenticate my email on flutter?
Follow the steps to Firebase email and password authentication in the Flutter application.
Read moreHow do I authenticate my phone number on flutter?
On the Firebase Console, select the “Phone” authentication provider and click on the “Phone numbers for testing” dropdown. Enter a new phone number (e.g. +44 7444 555666 ) and a test code (e.g. 123456 ).
Read moreHow do I use Google authentication in flutter?
Flutter – Google Sign in UI and Authentication
Read moreHow do you authenticate a Flutter app?
Implementing Firebase Authentication in a Flutter app
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