This is not possible with the help of the Muse. Everything you need for your e-mail letters needs to be done in an outdated table layout. Block layout is not suitable for e-mail letters. States are also not suitable for letters. Only static pictures, static css and standard links.
Thanks Pavel. That's a shame, it would be so nice to do something creative within Mail as it's my primary point of contact with all my clients. Back to the drawing board to create a more basic streamlined version. Thanks again for your assistance.