title: option to send copy of customer welcome email to another address mail in magento 2
body: <p>i need to send a copy of <strong>welcome email to specific mail</strong>. </p>
  
  <p>what i did is i tried to create module to do it <strong>programmatically</strong>, i created a overrid that handle execute CreatePost.php but it sent before.</p>
  
  <pre><code>&lt;?php
  /**
   * Copyright © Cinemanext, Inc. All rights reserved.
   * See COPYING.txt for license details.
   */
  namespace Cinemanext\ForceLogin\Controller\Account;
  
  use \Magento\Framework\App\ObjectManager;
  
  /**
   * @SuppressWarnings(PHPMD.TooManyFields)
   * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
   */
  class CreatePost extends \Magento\Customer\Controller\Account\CreatePost
  {
  
  }
  </code></pre>
  
  <p>this option exist in order mail, you can send copy to specific email. </p>
  
  <p><a href="https://i.stack.imgur.com/BeIoQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BeIoQ.png" alt="send order mail copy"></a></p>
  
  <p>how i can add same function to welcome mail.</p>