With the Mailchimp for WooCommerce integration, your customers and their purchase data are synced with your Mailchimp account, making it easy to automatically follow up with customers post-purchase, recommend products, recover abandoned carts, and measure the ROI of your marketing efforts.
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.
Stamped.io is a tool to collect customer reviews. It's got nifty features including the ability to capture review feedback directly inside email, or the ability to request reviews via Facebook Messenger. Easily leverage the reviews you've gathered by displaying them on your product pages.
Recart is a tool that enables you to speak with customers via Facebook messenger. Merchants typically use to Recart to let customers know when a Black Friday sale has started, to educate them about products post- purchase, to inform them about new products, or just to send them the latest news.