Render email template in library for passing email body as a paramenter in CakePHP 3. (needed this for SendGrid)

cakephp-3-render-in-php.php

    	$template = 'dump';
	$layout = false;
	$view = new View(new \Cake\Network\Request, new \Cake\Network\Response);
	foreach ($vars as $key => $value) {
		$view->set($key, $value);
	}
	$view->viewPath = 'Email\html'; \\src\Template\Email\html
	$view_output = $view->render($template, $layout);