The announcement e-mails that you can send manually from the administration screen should have a preview feature. I assumed that while it was an HTML e-mail, that it would add in paragraph tags (or BR tags) around my paragraphs. I was a bit surprised when 50 people got a large block of text in what was my first announcement e-mail.

I think an a preview screen for the manual administration e-mails would be a good thing, and would allow us to catch such things before they become a problem.