We're drowning in email. And the many hours we spend on it are generating ever more work for our friends and colleagues. (Here's why.) We can reverse this spiral only by mutual agreement. Hence this Charter...

One of my favourite suggestions here is something I'm already doing; I think of it as e-mail telegraphy:

8. Give these Gifts: EOM NNTR
If your email message can be expressed in half a dozen words, just put it in the subject line, followed by EOM (= End of Message). This saves the recipient having to actually open the message. Ending a note with "No need to respond" or NNTR, is a wonderful act of generosity. Many acronyms confuse as much as help, but these two are golden and deserve wide adoption.