This entry comes from a podcast sponsored by a Lutheran ministry group.  At about 11 minutes in, the presenters discuss a handout that was originally submitted by a student, but that I have continued to maintain over the years.  

What kind of e-mailer are you? – Is your electronic correspondence
short and to the point, prompt, respectful and without error?  Martin
and Sallie talk about e-mail best practices and share new ways to use
the tool effectively.

• A World Without E-mail blog post from Mashable
• Read about the five-sentence rule in Mastering the Short Email from the Lifehack blog
• Writing Effective E-mail: Top 10 Tips from blogger Dennis Jerz
• E-mail retention discussion: WELSTech Episode 008 – Feb 27 2008

or download Episode 152 (54:55)