Can I have a submit button redirect to an outside URL?

Instead of the submit button sending off an email, is it possible to make the submit button redirect to an outside URL?

Yes, it is possible to do that.

Just edit the Thank you page settings, enable the redirect to the external URL option, and add the external URL.

Here is a useful guide: https://www.jotform.com/help/38-redirecting-users-to-a-different-page

Do check and let us know.