Hi! What process does CC suggest for not sending promotional emails to contacts that have already registered for an event. For example, if you have an event that you are planning on sending 4 promo emails for, after the first email you have 20 contacts signed up that you don't want to receive further emails about signing up. At the moment I am just exporting then importing the list before every email. Is this the best practice based on CC's offerings? Thank you!
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