I would like to change the Canonical Distinct ID of my users. Currently they have been identified with their email address (we have unique email address in our DB so we used that), but I would like to drop the emails and switch to their user unque IDs from our database instead.
I have looked into both merge and alias APIs but they do not seem to be the case for what I need. All users already have an alias to their email so I’d just like to drop all emails set as Canonical Distinct ID.
Is it possible to do that?