Using Placeholders for Event Handlers
Placeholders can automatically replace specific information (such as customer address, order details, subscription status etc.). Each type of notification has its own set of placeholders that aren't available to other notification types.
Placeholders allow to extract information from the database and put into a notification message.
<html>
<body>
This notification is being sent to notify you that your subscription "subscription.id — subscription.name" has been stopped.
</body>
</html>