Sending a survey through a weblink with embedded data

I have a survey that is sent to customers attending a Training session. I would like to send it to people at the end of each session to get a high response rate.

Using a web link is not ideal as I cannot track identifying information.

Uploading a contact list is not an ideal option either. Teams who are admin on this survey have the bandwidth to create a contact list only once a week. We would lose the survey momentum and have fewer respondents.

To sum up, we want to have the cake and eat it too I’d like to have your opinion on a solution that will combine embedded data + instant send.

Thank you!