I would like to start with Klaviyo and have installed the app at Shopify for this purpose. Now all customer profiles are imported to klaviyo. Now I have the problem that I can't send anyone a marketing mail because Klaviyo incorrectly assumes the following for all customers: "Provided Email without opting in to email marketing". That's wrong. I used another newsletter program for this, which then caught up with the opting in subscription in retrospect. How can I change this in Klaviyo for all customers that I can send them marketing mails?
Best answer by David ToView original