Honestly, even for someone that started his career making table HTML layouts with inline styling it's a major PITA to code up emails that look respectable on all clients. I can't wait to try this out.
If you are programatically generating emails, there are libraries for most popular languages that will convert an external stylesheet into inline styles - for example, pynliner [1] for Python.
They let you write HTML and CSS, test in the browser, and only at the last moment convert `p { text-color: #333 }` and `<p>..</p>` to `<p style="color: #333">`
I spent a ton of my childhood building HTML table layouts, especially forum skins. Maybe it's because I'm now spoiled by lovely CSS and established web standards, but the thought of coding any HTML email up makes me sick.
