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The worst customer support I've ever had in my entire life. All I want from this app was integrating it with Klaviyo, and they state that they have integrated correctly. And immediately after testing it out, nothing was working properly with Klaviyo. Tried contacting their "live" customer support and they only reply to messages after 3 days. Still nothing from them at all on this basic question about a vital feature. That's why you pay more for a better app (AfterShip).