Can I embed a form in content boxes?

Hi,

I am using the evolve theme and love it, but I’m running into a few problems. One is that I would like to put an embedded mailing list form into one of my content boxes. I know I could just put a link to the form it in the content box, but I feel like it would be easier and look more professional for the form to be right on the main page.

Right now, when I plug the code into the content box, it just puts the code on the site rather than the embedded form. It’s a mess. Is there any way to get this to work?