I was reminded of six word stories when reading this:
five.sentenc.es is a personal policy that all email responses regardless of recipient or subject will be five sentences or less. It’s that simple.
I think I’m around to five or six. But it is always nice to see something that you instinctively practice written down. I found out about it thanks to this post by Tom Limoncelli.
Managing organized complexity 
You should follow matt might’s blog, it’s awesome :-)
I know of people systematically following the zero-sentence (subject included) rule. They just attach numerous and/or huge files (usually ms-word documents) to empty-subject, empty-body, wrong-or-no-encoding header messages…
And usually such messages they send to multiple recipients…