MailPoet is one of the best WordPress/WooCommerce email marketing automation plugins. It integrates with your CMS and enables you to use images and visuals directly from your WordPress library, thus eliminating the need to upload them again. You can send automated emails at the right time to retain customers. It is easy to use and set up. Moreover, you can also customize your emails with the help of an editor and advanced features. It has over 50 pre-designed templates available to choose from.