Firebase confirmation email not being sent

Question

I've set up Firebase email/password authentication successfully, but for security reasons I want the user to confirm her/his email. It says on Firebases website:

When a user signs up using an email address and password, a confirmation email is sent to verify their email address.

But when I sign up, I doesn't receive a confirmation email.

I've looked and can only find a code for sending the password reset email, but not a code for sending the email confirmation.

I've looked here:

https://firebase.google.com/docs/auth/ios/manage-users#send_a_password_reset_email

anyone got a clue about how I can do it?

Answer 1

I noticed that the new Firebase email authentication docs is not properly documented.

firebase.auth().onAuthStateChanged(function(user) {
  user.sendEmailVerification(); 
});

Do note that:

1. You can only send email verification to users object whom you created using Email&Password method createUserWithEmailAndPassword
2. Only after you signed users into authenticated state, Firebase will return a promise of the auth object.
3. The old onAuth method has been changed to onAuthStateChanged.

To check if email is verified:

firebase.auth().onAuthStateChanged(function(user) { 
  if (user.emailVerified) {
    console.log('Email is verified');
  }
  else {
    console.log('Email is not verified');
  }
});

Answer 2

After creating a user a User object is returned, where you can check if the user's email has been verified or not.

When a user has not been verified you can trigger the sendEmailVerification method on the user object itself.

firebase.auth()
    .createUserWithEmailAndPassword(email, password)
    .then(function(user){
      if(user && user.emailVerified === false){
        user.sendEmailVerification().then(function(){
          console.log("email verification sent to user");
        });
      }
    }).catch(function(error) {
      // Handle Errors here.
      var errorCode = error.code;
      var errorMessage = error.message;

      console.log(errorCode, errorMessage);
    });

You can also check by listening to the AuthState, the problem with the following method is, that with each new session (by refreshing the page), a new email is sent.

firebase.auth().onAuthStateChanged(function(user) {
  user.sendEmailVerification(); 
});

Answer 3

You can send verification email and check if was verified as follow into the AuthListener:

mAuthListener = new FirebaseAuth.AuthStateListener() {
        @Override
        public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
            FirebaseUser user = firebaseAuth.getCurrentUser();

            if (user != null) {

//---- HERE YOU CHECK IF EMAIL IS VERIFIED

                if (user.isEmailVerified()) {
                    Toast.makeText(LoginActivity.this,"You are in =)",Toast.LENGTH_LONG).show();
                } 

                else {

//---- HERE YOU SEND THE EMAIL

                    user.sendEmailVerification();
                    Toast.makeText(LoginActivity.this,"Check your email first...",Toast.LENGTH_LONG).show();
                }

            } else {
                // User is signed out
                Log.d(TAG, "onAuthStateChanged:signed_out");
            }
            // [START_EXCLUDE]
            updateUI(user);
            // [END_EXCLUDE]
        }
    };