/**
* @return MailService
*/
public static function get_mail_service()
{
if (self::$mail_service === null) {
$config = MailServiceConfig::load();
if ($config->is_smtp_enabled()) {
self::$mail_service = new SMTPMailService($config->to_smtp_config());
} else {
self::$mail_service = new DefaultMailService();
}
}
return self::$mail_service;
}
