Using the below rest api request, is it possible to subscribe multiple email id's (not registered with the Tableau server I am using)
<content type="content-type" id="content-id" />
<schedule id="schedule-id" />
<user id="user-id" />
I dont believe that this is possible.
To subscribe, you subscribe against a 'user id', which you can only have when someone has been registered against the Tableau Server, and be active (ie not unlicensed)
Hope this helps