email_exists

apply_filters('email_exists') is found 1 times:

• /wp-includes/user.php line 2032

  	 * @param int|false $user_id The user ID associated with the email,
  	 *                           or false if the email does not exist.
  	 * @param string    $email   The email to check for existence.
  	 */
  	return apply_filters( 'email_exists', $user_id, $email );
  }
  
  /**
   * Checks whether a username is valid.
   *
   * @since 2.0.1
  

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