Getting into html emails

Summary

Would like a lot of CSS formatting in html emails but strips out . Is there any way to do it other than all inline CSS?

Content

Want to send flashier emails out to new users.

They look great in preview but as soon as you press Save it strips out the <script> </script> section out and displays the CSS in 'raw text' at the top of the email. If it can Preview it with it in, why can't it Save it with it in.

Given that it does strip out <script> </script> is there any workaround other than doing all the CSS inline?