To utilise our MailChimp integration, you will require a MailChimp account, where you can signup here: https://login.mailchimp.com/signup/
Navigate to Tools > Integrations> Other integrations.
Select the Export customers and suppliers button under MailChimp.
Enter your API key from MailChimp and press the Next button.
Choose the MailChimp list and select the customers you want to be included in the mailing list. Click on the Export selected items button.