Mailing list is selected in particular quiz settings. Navigate to "ARI Stream Quiz -> Quizzes" page, select a quiz which you want to integrate with email marketing service, open "Settings" tab on quiz edit page, enable "Collect users's data" checkbox and enable "MailChip integration" or "MailerLite integration" or "Zapier integration" checkbox. It is possible to select mailing list for MailerLite/MailChimp directly in quiz settings. For Zapier, a webhook URL is entered in quiz settings and other integration is configured on
Zapier side.
Regards,
ARI Soft