Hi @snecz, thanks for your patience. The Mailchimp for WooCommerce plugin is designed to comply with best practices regarding user consent.
To ensure that customers are only added as subscribers when they explicitly opt-in, you should could enable the ‘double opt-in’ feature in your Mailchimp settings. This requires users to confirm their subscription by clicking a link in an email before they are added to your list, thereby confirming their consent.
If you don’t want to use double opt-in, make sure that the option to subscribe is presented as an opt-out (unchecked by default) checkbox during the WooCommerce checkout process and account creation. This ensures that only those who actively choose to subscribe will be added to your Mailchimp Audiences.
If you need further customization, you can also use hooks provided by WooCommerce and the Mailchimp for WooCommerce plugin to implement additional checks or modify the subscription behavior during account creation by referring to our Wiki.
Please let us know if you need any other assistance. Thank you for using our plugin.