Check boxes in the message bric showing 'true/false' on the email

When I receive the email from my message page I see each check box returning a ‘true’ or ‘false’. A client has asked :- "can the email show “yes” or “no” instead of “true” or “false”.

I know this sounds really picky but as they say : ‘the customer is always right’

Any help would be gratefully received. I want to keep messaging within blocs rather than use something like machform, particularly having just bought the recaptcha bric from bricsdesign.