Documentation on how to use with CiviMail?
This looks like it solves a long overdue need.
As I understand it, you were aiming to track which channel resulted in, say, a donation.
Could you document how to use it to track how many people clicking on a link in a specific email end up donating? Wouldn't one want to tell GTM about a click-through from a CiviMail?
I don't currently use GTM, and so I'm not quite clear on how it is aiming to obsfucate data when there is not enough to prevent re-identification of a contact. Ideally, one would prefer to use completion rather than click through to determine preference in A/B mailings. So how many sent version A of email versus version B actually donated, or registered for an event. Is this do-able? If so, documentation would be invaluable.