Turn off sending verificaiton email when creating user

I am using firebase authentication in my react-native app developing.

When I create user using firebase authentication, firebase sends verification email automatically.

But I want firebase not to send verification email when creating user.

This is the code to create user.

try {
var data = await auth().createUserWithEmailAndPassword(this.state.account_email, this.state.account_password);
this.authData = data;

  // verification email
  // this.authData.user.sendEmailVerification();

} catch(error) {
  console.error("[SignUp] onPressSignup() -> error: ", error);

  if (error.code === 'auth/email-already-in-use') {
    Toast.show({
      type: 'error',
      text2: "Your email address is already in use.",
    });
  } else if (error.code === 'auth/invalid-email') {
    Toast.show({
      type: 'error',
      text2: "Your email address is invalid.",
    });
  } else {
    Toast.show({
      type: 'error',
      text2: error.message,
    });
  }
}

I also tried to use firebase admin sdk's createUser function.

// user
var userData = {
  email: data.email,
  password: data.password,
  emailVerified: true,
};

var userRecord = await getAuth().createUser(userData);
functions.logger.info("\tuserRecord: ", userRecord.toJSON());

Is there any way to turn off automatically sending verificaiton email?

I solved this finally.

1. I used firebase admin sdk to create user

2. When creating user, use random email(that is not real email but with correct email format, ex. 123234@123.com).

3. once created user, using getAuth().updateUser to change random email to real email.

   try {
    // random email
    var random = Math.floor(Math.random() * 100000);
    var randomEmail = random + "@123.com";
    functions.logger.info("\t\trandomEmail: " + randomEmail);
   
    // user
    var userData = {
      email: randomEmail,
      password: data.password,
      emailVerified: true,
    };
   
    var userRecord = await getAuth().createUser(userData);
    functions.logger.info("\tuserRecord: " + userRecord.toJSON());
   
    await getAuth().updateUser(userRecord.uid, {
      email: data.email,
      emailVerified: true,
    });
   
    return {
      success: true,
      docId: userRecord.uid,
    };    
   } catch(error) {
    functions.logger.error("createUser() -> error: ", error);
   
    return {
      success: false,
      error: error.message,
    };
   }