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.

Zendesk is a customer support tool. It's got 2 main features: ticketing and knowledge base. Ticketing: Zendesk gathers customer queries in one place where you can manage and respond to customer questions efficiently. Knowledge base allows you to create an FAQ section to guide your customers.

Trusted by over 7,000 Shopify and Shopify Plus stores like Brooklinen, Kopari, and Ugly Water. Postscript gives ecommerce brands the tools they need to run a world-class SMS marketing program. Within minutes you can sync data, start collecting compliant subscribers, have 2-way conversations, and enable deeply targeted campaigns.

Re:amaze combines email, social and mobile conversations seamlessly so your customers can reach you however they want. It integrates directly with Shopify so you can access order data instantly and edit orders, process refunds, and update customer/order data right within support conversations.