Stop Popup After MailChimp Form Submit

I have a popup defined with a MailChimp subscribe form from mc4wp.com. The popup shows after 20 seconds. If the person submits the form, the page reloads, and then 20 seconds later the form appears again. Is there a way to not show the popup if someone successfully submitted the form? Maybe set a cookie?

Appreciate any insight.

Thanks!

--Craig