Hi Wicner,
Unfortunately I don't believe it is possible to send a survey email from support automation. You can however configure an Exit Survey. You would need to define the survey directly on the exitSurvey.html page, after you set the Exit Survey Page users will be presented with this once the session is closed out.
For example when a standard survey is sent out the email generates a URL link for the user to click on which then opens the survey template you define through SDM. For the exit survey, unfortunately it is not possible to link this to an existing Service Desk template, you would need to set a link here to a program to collect the survey data. For example you can link to a Medallia page, Survey Monkey, etc.
https://docops.ca.com/ca-service-management/17-1/en/using/support-automation/customizing-live-assitance-pages/configure-the-page-layout#ConfigurethePageLayout-DefinetheExitSurveyPage
Thanks,
Scott