43Folders.com – always a great source of productivity information – has posted a bunch of tips for writing sensible email. All are great recommendations and well worth the time to read. I’d like to add one more – know your audience. The content of your email should vary greatly by recipient.
For example, I worked with a client who routed a lot of my requests
through his administrative assistant. It was imperative that I
thank her whenever she sent me an email or I wouldn’t get a timely
response the next time I needed something. On the flip side, the
client could not care less when I responded with my usual pleasantries
in email – "get down to business" is a direct quote.
Read Writing sensible email messages for more information on crafting effective email.