snappymail/integrations/nextcloud/snappymail/templates/index.php

<iframe id="rliframe" style="border: none; width: 100%; height: 100%; position: relative;" tabindex="-1" frameborder="0" src="<?php echo $_['snappymail-iframe-url']; ?>"></iframe><?php OCP\Util::addScript('snappymail', 'resize');