CF7 Error Notifications

functions.php

/*
*  Send Notification if a CF7 Form fails
*/	
function cf7_error_notifications() { ?>

<script type="text/javascript">
	document.addEventListener( 'wpcf7mailfailed', function( event ) {
		<?php 
			wp_mail( 'youremail@gmail.com', 'Form Failed', 'CF7 Form failed to send', array('Content-Type: text/html; charset=UTF-8')); 
		?>
	}, false );
</script>	
<?php 
}
add_action( 'wp_footer', 'cf7_error_notifications' );