mailcow-dockerized/data/web/templates/modals/queue.twig

<!-- show queue item modal -->
<div class="modal fade" id="showQueuedMsg" tabindex="-1" role="dialog" aria-hidden="true">
  <div class="modal-dialog modal-xl">
    <div class="modal-content">
      <div class="modal-header">
        <h3 class="modal-title"><i class="bi bi-card-checklist" style="font-size:18px"></i> ID <span id="queue_id"></span></h3>
        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
      </div>
      <div class="modal-body">
        <textarea class="form-control" id="queue_msg_content" name="content" rows="40"></textarea>
      </div>
    </div>
  </div>
</div><!-- show queue item modal -->