ClickOptin - UTM Tracking

It would be amazing to have some kind of tracking ID with ClickOptin URL's. That way a user can see from which Broadcasts of Follow Up Emails users are opt-in in from. Maybe UTM tracking?

For example:

https://website.com/instant_optin/of3qks7dwj2imfhh/#EMAIL#/?utm_source=broadcast2020Jul08

Or any other kind of way. :)

Thanks,
Alex