title: Send customer processing order email notification for on-hold Woocommerce orders
body: <p>If a customer places an order via bacs gateway, the order status is "on-hold"  and the customer recieves the accompanying mail-notification with bank details. After payment is done, customer receives another email - almost with the same content as before: customer_processing_order</p>
  
  <p>My goal:</p>
  
  <p>Disable the mail for on-hold-orders (this is a default function in the backend) and send the email which is actually meant for paid-orders which carry the status "processing" also in case of an order with (on-hold-status) whilst keeping it also in place for customer-processing-orders.</p>
  
  <p>In other words: New orders with status "on-hold" and "processing" should share the same email-template. </p>
  
  <p>Is this somehow possible to achieve?</p>
  
  <p>my rather poor try so far (based on another helpful solution):</p>
  
  <pre><code>function unhook_new_order_processing_emails( $email_class ) {
      // Turn off pending to processing for now
      remove_action( 'woocommerce_order_status_pending_to_processing_notification', array( $email_class-&gt;emails['WC_Email_Customer_Processing_Order'], 'trigger' ) );
      // Turn it back on but send the on-hold email
      add_action( 'woocommerce_order_status_pending_to_processing_notification', array( $email_class-&gt;emails['WC_Email_Customer_On_Hold_Order'], 'trigger' ) );
  }
  </code></pre>
  
  <p>Thanks in advance for your help!</p>