You can now sync your customers and their order data to MailChimp. You can also sync your newsletter subscribers to MailChimp as well from your Launch Cart eCommerce Store.
To enable this, just go to >Super Powers> then click on the MailChimp app to enable.
You can also enable newsletter opt-in forms to show in the footer of your store by going to >Appearance>Theme Editor>Customize>General then turn on the Emai Footer widget to show.