Klaviyo

Klaviyo specializes in marketing for ecommerce brands, with deep native connections to Shopify, BigCommerce, and other shopping platforms. Its value comes from access to product data, purchase history, and customer segments right within the email editor, so you can send targeted campaigns based on what people actually bought. The enterprise plan handles high-volume lifecycle sends for large retailers.

The platform excels when your business lives on these ecommerce platforms and you want email and SMS messaging coordinated with product catalogs and purchase data. Teams typically use it for abandoned-cart recovery, post-purchase sequences, and seasonal campaigns.