Single or double opt-in? Now you have a choice with MailChimp! That sounds great...except that your existing forms will be affected. Here is what you need to know about the two kinds of opt-ins and how you should update your forms before October 31, 2017.  For more: http://createifwriting.com/chimpdates Also! My book, Creative Collaborations, is ready for pre-order! Get yours here: http://createifwriting.com/cc