How do I stop Outlook from rendering an email address as a mailto: link?

Question

I am creating an HTML email to be sent to a user. If there is a valid email address to within an HTML email, Outlook will render it (normally helpfully) as a mailto: link.

Answer 1

I did it like this:

username@@mail.com

The parser was not able anymore to identify the e-mail and didn't add the "mailto" hyperlink.