Collector of User Defined Source
After sending your survey via custom source links, you can track the source collector of responses.
1. Access the "Result" page and click on Responses to view the details of each respondent.
2. Check the Collector section to see where the respondents came from. If they came from user-defined source, it will display "User-Defined Source". The Collector Details will specify the source name of each respondent.