Event triggers don’t trigger email notifications by themselves. Event triggers will send data to a public web service that is configured to accept the events. The most common way to subscribe to SailPoint Event Triggers is to use SailPoint’s Workflows solution, which allows you to easily configure a workflow that listens to an event trigger and then performs one or more actions based on that event. If you do not have workflows, you can use a different low code tool, like Workato, Zapier, or Microsoft Power Automate. If you want to host a custom trigger listening service, then I recommend you check out this video presentation which covers all the details.