MailPoet Checkout Subscription
Allow customers to subscribe to your MailPoet newsletters when they make a purchase from your WooCommerce store.
Email marketing is not going away anytime soon. It is a major communication bridge between you and your customers.
MailPoet is a user-friendly newsletter plugin which will allow you to keep in contact with your customers, and this extension will give you the ability to subscribe them to your MailPoet lists at checkout.