HTML Email is a whole different ballgame from Websites, which have moved away from tables and toward CSS.
I'm looking for recommendations for HTML mail tools, hopefully from someone who has actually used them (I can manage a Google search).
Anything that does a good job of converting from CSS standards to HTML mail?
Anything that can parse the HTML and point out problems that will occur in various email programs?
Or do you just hand code and try it in all the email programs? Any services like browser shots for email?
Update:
Assume the email is visually appealing--not just text, but something designed by a good visual designer.