
Hi @Robert94 ,
Unfortunately, this function cannot be implemented. When you use anonymous in the form, the responder's email returned by flow will also be anonymous.
Once you've collected the anonymous results, there's no way to track who submitted what.
If that were possible then someone could trick submitters into thinking the survey is anonymous, and then reverse engineer their ID to use for sinister gain.
If you want to ever cover your bases, might be worthwhile to add a text field for Name and/or Email.
Best Regards,
Levi