I would like to generate external mails to our customers using JSM as trigger. For that I want to create a ticket and then add the customer as a request participant. I will want to do this via API.
However now I have noticed, that I can't add non-customers to the "request participants" field.
Apparently there was a checkbox in the past called "Customers can be added by agents" under project settings but that settings doesn't exist anymore. I then went to check all fields that I could find, but I can't resolve this issue.
These are the fields that I have checked currently:
What am I missing?
