Klaviyo: Email Marketing & SMS

This app is very powerful to manage all issues related to email marketing. It is true you will need a learning curve, but in other apps it is the same. The Shopify integration is simple, therefore creating flows is easier. I am suprissed when some people say Customer Service doesn't work properly, because Klaviyo answers to me always on time resolving my doubts. I am very satisfy with Klaviyo. Recommended.