comments-bundle/src/Resources/contao/classes/Comments.php
public static function notifyCommentsSubscribers(CommentsModel $objComment)
	{
		// Notified already
		if ($objComment->notified)
		{
			return;
		}

		$objNotify = CommentsNotifyModel::findActiveBySourceAndParent($objComment->source, $objComment->parent);

		if ($objNotify !== null)
		{
			while ($objNotify->next())
			{
				// Don't notify the commentor about his own comment
				if ($objNotify->email == $objComment->email)
				{
					continue;
				}

				// Prepare the URL
				$strUrl = Idna::decode(Environment::get('base')) . $objNotify->url;

				$objEmail = new Email();
				$objEmail->from = $GLOBALS['TL_ADMIN_EMAIL'];
				$objEmail->fromName = $GLOBALS['TL_ADMIN_NAME'];
				$objEmail->subject = sprintf($GLOBALS['TL_LANG']['MSC']['com_notifySubject'], Idna::decode(Environment::get('host')));
				$objEmail->text = sprintf($GLOBALS['TL_LANG']['MSC']['com_notifyMessage'], $objNotify->name, $strUrl . '#c' . $objComment->id, $strUrl . '?token=' . $objNotify->tokenRemove);
				$objEmail->sendTo($objNotify->email);
			}
		}

		$objComment->notified = '1';
		$objComment->save();
	}
public static function notifyCommentsSubscribers(CommentsModel $objComment)
	{
		// Notified already
		if ($objComment->notified)
		{
			return;
		}

		$objNotify = CommentsNotifyModel::findActiveBySourceAndParent($objComment->source, $objComment->parent);

		if ($objNotify !== null)
		{
			while ($objNotify->next())
			{
				// Don't notify the commentor about his own comment
				if ($objNotify->email == $objComment->email)
				{
					continue;
				}

				// Prepare the URL
				$strUrl = Idna::decode(Environment::get('base')) . $objNotify->url;

				$objEmail = new Email();
				$objEmail->from = $GLOBALS['TL_ADMIN_EMAIL'];
				$objEmail->fromName = $GLOBALS['TL_ADMIN_NAME'];
				$objEmail->subject = sprintf($GLOBALS['TL_LANG']['MSC']['com_notifySubject'], Idna::decode(Environment::get('host')));
				$objEmail->text = sprintf($GLOBALS['TL_LANG']['MSC']['com_notifyMessage'], $objNotify->name, $strUrl . '#c' . $objComment->id, $strUrl . '?token=' . $objNotify->tokenRemove);
				$objEmail->sendTo($objNotify->email);
			}
		}

		$objComment->notified = '1';
		$objComment->save();
	}
Notify the subscribers of new comments

@param CommentsModel $objComment