Automattic Happiness Engineer
You can enable and disable your core emails from “WooCommerce > Settings > Emails” screen as per the documentation here:
Yes, which one is the User mail for new orders? I only see the admin for new orders.
Customers don’t receive a new order email, they only receive emails when the order is pending, processing, or completed. Here’s an overview from my test site:
Link to image: https://d.pr/i/IhhSuU
In this case, you don’t need to disable the new order emails for customers because they don’t exist. 🙂
I’m going to mark this as resolved – if you have any further questions, you can start a new thread. If you have further questions regarding Mailchimp, I recommend contacting Mailchimp for further help.