Klaviyo: Email Marketing & SMS

This is one of the worst apps so far I've tried in Shopify. Cost per month is high, to reach support is difficulty, their flows do not work as it should and to keep track of our flow we opted for bcc on each email; it worked on 1-flow only and the rest never worked. We reached out to customer support to get assistance and they never resolved the issue longer than 24-hours. It is not worth the money nor the setup time.