- Respect recipient's time (ie don't send an email unless you absolutely have to).
- Don't treat email brevity as rudeness.
- Keep emails as clear as possible.
- Keep questions specific.
- Don't add unnecessary cc's.
- Don't let threads get too long.
- Avoid unnecessary attachments.
- Restrict short messages to the subject line.
- Don't send contentless responses
- Disconnect: don't spend so much time on email.
Much as I appreciate this charter and its attempts to consciously steer our norms regarding email, i don't think it goes far enough.