Mail Chimp

From Admin Menu click Mail Chimp for WP >> MailChimp >> API key

From Admin Menu click Mail Chimp for WP >> Form >> Insert code

<div class="ova_mailchimp">
   
<i class="icon_mail_alt"></i>
<input type="email" name="EMAIL" class="email" placeholder="Your email address" required />
<input type="submit" value="subscribe" class="submit" />
<div class="list">
      <p>
        <label>List choice</label>
        <label>
            <input name="_mc4wp_lists[]" type="checkbox" value="a328b7e111" checked /> <span>VNTravelBooks</span>
        </label>
      </p>
</div>
 
</div>