Elgg-Lorea-Hydra/mod/html_email_handler/pages/test.php

<?php
/**
 * A test page for theme developer to view the layout of an email notification
 */

elgg_admin_gatekeeper();

$user = elgg_get_logged_in_user_entity();
$site = elgg_get_site_entity();

$subject = elgg_echo("useradd:subject");
$plain_message = elgg_echo("useradd:body", array(
	$user->name,
	$site->name,
	$site->url,
	$user->username,
	'test123',
));

$html_message = elgg_view("html_email_handler/notification/body", array(
	"subject" => $subject,
	"body" => $plain_message,
	"recipient" => $user
));

$html_message = html_email_handler_css_inliner($html_message);
$html_message_ext = html_email_handler_normalize_urls($html_message);
$html_message_ext = html_email_handler_base64_encode_images($html_message_ext);

echo $html_message_ext;

if (get_input("mail")) {
	// Test sending a basic HTML mail
	$options = array(
		'to' => $user->email,
		'subject' => $subject,
		'body' => $plain_message,
		'recipient' => $user,
		'attachments' => array(
			array(
				'filepath' => dirname(__DIR__) . '/manifest.xml',
			),
		),
	);

	html_email_handler_send_email($options);

	// Test sending attachments through notify_user()
	$to = $user->guid;
	$from = $site->guid;
	$subject = 'Notification test';
	$message = 'This notification has been sent using notify_user() and it should have an attachment.';
	$params = array(
		'recipient' => $user,
		'attachments' => array(
			array(
				'filepath' => dirname(__DIR__) . '/manifest.xml',
			)
		)
	);

	notify_user($to, $from, $subject, $message, $params, array('email'));
}