Hi lbreme,
Having an email with a mailto link is the best user experience. (it’s generally bad UI to force website visitors to copy and paste when they should be able to just click and it auto launch their email client)
Im assuming you want it plain text so it is styled like your other paragraph text? If this is the case, css would be the best implementation to do that.
Each email has a custom html class assigned to it so you could add css styles to your style sheet for each specific one (you would have to inspect the code in the browser to see what class is added, it’s dynamic so will depend on the email).
Or you can set the global style using the below CSS.
You can drop this code into the custom css module inside WordPress.
Appearance > Customize > Additional CSS
(set color to your body default or paragraph default, cursor will render a standard cursor with auto to remove the hand which indicates a clickable element, you might need to adjust a tag hovers all this depends on your theme, the second style will remove any auto underline on link hover)
.cfe-wrapper a {color:#000; cursor:auto;}
.cfe-wrapper a:hover {text-decoration:none;}