I am wondering if I can call an API like ServiceNow to populate email template variables and also is there a way to make a choice list.
Example:
Template opens tickets to ServiceNow we want to have the ability to call the SN data in the variables, like Assignment Group or Configuration item, so that the data is correct. The priority would be a choice list 1-5.
Have you checked the ServiceNow custom extension? Here: https://www.appdynamics.com/community/exchange/extension/appdynamics-servicenow-rest-api-alerting-ex...
You can maybe pull the parameters you're sending to ServiceNow and convert that into an Action. Or possibly send the data to ServiceNow first, and then do an HTTP Request or API call from there to combine the two metrics? Not sure though, we use ServiceNow a my organization but I haven't played with the extension myself, we did basic integration of opening tickets off emails.