SEOshop provides automatic integration with MailChimp, so you no longer need to manually import each newsletter subscription to your mailing list, the app will do this for you. The app costs €4,95 a month and can be purchased by navigating to GENERAL > App store in the left menu of the back office.
If you prefer to import customers yourself, you may export a list of all customers that have subscribed to your newsletter through TOOLS > Import & Export > Export > Customers in the left menu. This file can subsequently be imported to MailChimp. The video below (available in English only) will demonstrate how to import subscribers to MailChimp. If you have any further questions or would like to learn more about other MailChimp options please check the MailChimp website.