Setting MailChimp API:

Go to Dashboard >> MailChimp For WP >> MailChimp >> Setting your API Key then click “Save Changes“. To learn how to get API key, you can refer document of MailChimp.

mailchimp

Create MailChimp Form:

Go to Dashboard >> MailChimp For WP >> MailChimp >> Forms:

mailchimp-form

Demo Mag Paper theme has a style MailChimp form available, just copy and paste below content into your MailChimp form:

<input type=”email” name=”EMAIL” placeholder=”Enter your email” required>
<button type=”submit”>Subscribe</button>