So, my understanding is that the only way a user is prompted to unsubscribe from specific lists is if they were prompted to subscribe to specific lists in the first place. How can I make this work when emails are collected on paper and imported by hand? Is it possible to push email signup emails to a list of people who are not contacts yet in order to give them the opportunity to select which lists they're interested in? Am I missing or misunderstanding anything? Thanks!
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