Email Etiquette

Subject line:
Your subject line is not about arousing interest or curiosity. Make sure not to be wordy and don't let the subject say "hi" or "hey" as the subject. Make sure the context is clear. Be precise and to the bottom line. The subject basically need to be a summary of everything about to be mentioned in the body of the email.

Punctuation:
How you write a sentence in an email carries a lot of meaning to the reader. Don't leave punctuations out of an email because it can cause confusion to the reader and they may not have any idea what you are talking about or may misinterpret your message. Avoid slang as best you can. Too much can cause problems to the email. Don't use too many exclamation points in your email. Professional emails are not the place for them.

"Flaming:"
Be careful where and how you are using the flaming style email. Only do if necessary. And make sure not to have wars with other people by way of this email style.


http://email.about.com/od/emailnetiquette/tp/core_netiquette.htm