Hey Jeff, if I use a method like the one that you mentioned, doesn't the email need to use a unique URL?
For example, in a case where we direct people to a contact us on our website, it's possible that even if the lead clicked on that specific link in the email, that the lead could have filled out the form sometime in the past or sometime in the future and in those cases, the form fill outs would not be a result of that email.