Is there a way to set the thank you email so that it is sent right after the survey is completed? The option “immediately after” takes around 20 minutes to send.
From my experience with SurveyGizmo and other online apps, the email is generated immediately, but then goes into an outgoing email queue along with the other invitations, reports, and reminders. Emails in the queue are sent out in batches to reduce the likelihood that they are flagged as spam. So the exact time that your thank you email goes out depends on the quantity of other emails in the queue.