Creating custom alert using external lookup table and Palo Alto Data

Hello,

I am using the Splunk for Palo Alto App in order to send threat logs from our Palo Alto Devices.

I was interested in making a custom alert in Splunk that would email the user that is generating the threat alert so they are aware of it.

I know that external lookup tables can be used to make a reference database that will bind the username to the email.

But from there, not sure how I can generate the alert. I would want the alert to trigger for a username and then lookup the email address in the external lookup table and then send an alert to that user's email address.

Do you know how this can be completed?

Let me know if you have any questions.

Thanks.

Brian