Happy to help here. In order to make your email address clickable, you’ll need to add a hyperlink from the rich text editor. There is more about this under Insert links with the rich text editor in our Help center. I’ll break down the steps for you below:
A tip for you as well, you can also make the phone number clickable by following the same steps, but entering “tel:” and then the phone number (instead of mailto:). That’s explained in the help document I linked as well.