John, or Billy, as it were, you make an extremely good point. I do use paragraphs and formal writing. Not run on sentences with no caps. However, you have shown me how to take it to the effective level.
The only thing I don't like about your suggested format is the lack of personality. In my emails, I try to give off a little of that 'inflection' that nostatic mentions. We tend to use emoticons on the BBS, and one can always use the symbolic ones in email. I sometimes do, especially if I want to make sure someone knows I'm being facetious.
I only communicate by email to Porsche people and related matters. My work involves in home sales and installation. I have to do all that in person. When I get home, I just want to type.

I'll put your
lessons to work. Thanks.