title: Android email validation vs Firebase email validation
body: <p><strong>Is there any way to use Firebase  email validation without performing credentials update and listening for failures? Something along the lines of <code>FirebaseAuth.validateEmail(someEmail)</code> ?</strong></p>
  
  <p>In Android it is possible to check for valid input email using :</p>
  
  <p><code>android.util.Patterns.EMAIL_ADDRESS.matcher(someEmail).matches();</code></p>
  
  <p>However this accepts emails finishing with top level domain being one character long, eg. <code>test@email.c</code></p>
  
  <p>Such emails however, are invalid for Firebase and will throw the following exception if used:</p>
  
  <p><code>com.google.firebase.FirebaseException: An internal error has occured. [ INVALID_EMAIL ]</code></p>
  
  <p>Is there a way of marking an input field invalid if user enters a firebase-invalid email address?</p>