Client has a big event on October 25th. He has a warm email list of 200 people. Nobody knows he's showing up yet. I have a plethora of ideas to help him but want to make it simple and effective based on time constraints. He doesn't have a CRM, all he has is an old-fashioned WordPress website with an appointment booking feature. The question is: should I export his list to the white label CRM I use for my clients, or should I just directly use something like convertkit, etc. to achieve that without lots of tech in the way. what would you do? thanks in advance