Mailing list subscription in Contact Form 7

Hello once again,

I would like to add a check field (already checked) to the form to add the email and name of the sender to my Mailchimp newsletter list.

How can I do that?

The Form code o the page is the following

<div class=”form-flat”>

<label>Your Name (required)</label>
[text* your-name]

<label>Your Email (required)</label>
[email* your-email]

<label>Your Message (required)</label>
[textarea your-message]

[submit class:button primary “Submit”]

</div>

The page I need help with: [log in to see the link]