This section presents 10 simple guidelines for electronic mail etiquette. It does not try to mandate any particular style or rules but try to highlight some important issues which affect the clarity of the email we send. After all, email is about communication, so clarity should be our goal. Always use a meaningful subject line. For example, Keep each line in your message shorter than 72 characters.
Longer lines can cause word-wrap and make readability difficult.
When replying to another message, include enough of the original message to provide a context, but include only the minimum you need from the original message - paraphrase or quote selectively. It's VERY annoying to have a 5-page message quoted back at you in its entirety with the words 3. At the end of your message, include your name, your email address, or a short signature - four lines is a useful guideline. Unnecessarily long signatures waste bandwidth and can be annoying. It's far better to make a concise announcement to the whole list, and then ask people who want more details to email you directly .