I want a list to get one email, but not be in my other email
We're sponsoring an event and their people have a rule that we can only send 1 email to their registrants. So far, I cannot seem to come up with a way to import the list and ban them from receiving other emails.
How should I go about importing the list into Marketo, but preventing them from automatically entering our nurtures/upcoming emails?
Any advice or suggestions would be helpful.