Hi @IBrockschmidt,
If you want to enroll a contact into a workflow when a property changes, you would simply set the enrollment trigger to “is known”:
It sound like you’d want contact to be enrolled whenever that happens. If that’s the case, you’d also enable re-enrollment as shown in my screenshot.
Something to keep in mind: The email address will only change in the same contact record under certain circumstances:
A website visitor must have accepted the cookies and filled out a form before. The website form must also have the setting “Always create contact for new email address” disabled.
An email address on a contact record is changed manually by an internal user.
An import updates the email address of the contact based on the contact ID.
Under any other circumstance, HubSpot would simply create a new contact record since it can’t recognize the website visitor and match it with the contact record.
Hope this helps!