QSM MailChimp Integration Overview:

Grow your list of subscribers in MailChimp by using this addon to add users who take your quizzes and surveys! This add-on will give you the ability to add users who take your quiz to your lists in MailChimp. This addon will also pass the user’s name, business, and phone to MailChimp if you collect that information. You can choose which list to add the subscribers to for each quiz!

You can also choose to hide the checkbox to automatically subscribe users to your mailing list. Then, you can set whether to enable or disable the double opt-in emails.