Hi
How do I get old subscribers from Prestashop 8.0.4 into Klaviyo? When I used Mailchip they came in automatically but isn't that an option in Klaviyo?
I have tried to extract a CSV list from prestashop but it does not come in a format that Klaviyo understands :-/
If customers subscribe to newsletter in prestashop(not Klaviyo popup), then Klaviyo cannot retrieve data itself… is that correct?
Best regard
Dennis