Go beyond the basics with the Klaviyo marketing app. New stores get a guided setup — sign-up form, welcome email, and abandoned-checkout flow — without leaving Shopify Admin. Unify data from 350+ integrations and boost marketing performance with campaigns, smart segmentation, and automated workflows from Klaviyo’s AI Agents. Over 117k brands use Klaviyo and Shopify to grow faster with personalized emails, SMS, WhatsApp messages, and marketing automation tools that turn browsers into buyers.

Hundreds of millions of alerts delivered across 25,000+ brands. Don't let out-of-stock products drive customers away. Auto-notify shoppers the moment items are back in stock via email, SMS, and push. Pre-sell and preorder collections before they drop. Capture demand earlier with Wishlists, and create urgency with Low Stock badges. Replace "Out of Stock" with customizable buttons that match your brand, device, and language. Built for high-SKU catalogs to boost cash flow fast.