Klaviyo is the best in class email marketing solution for eCommerce. It's powerful because it connects to your store, and you can create awesome customer segments based on past purchasing behaviors, customer preferences, and even future predictions of spending.

Gorgias is of the most popular helpdesks for D2C brands. It centralizes all your support tickets in one place and enriches them with lots of extra context about a buyer's profile. Through Gorgias, you can connect directly to your eCommerce store and edit orders, modify subscriptions, and refund payments without leaving your helpdesk.

Recharge is the leading Shopify subscription solution for online businesses. It makes it easy to transform one-time products into subscription options.

Smartrr is a new option for subscription that boasts their ability to deliver an elegant membership experience for your customers, provides them with all the flexibility they need to avoid unnecessary churn.

Rebuy is the ultimate personalization platform for Shopify brands. Rebuy provides AI-powered tools to enhance customer experiences through personalized product recommendations, smart search functions, dynamic bundling, and automated marketing strategies like upselling and cross-selling. Rebuy's suite of fully-integrated tools increases revenue, average order value, and customer retention for D2C brands.