*Don't write in all caps. It is considered yelling.
*Ask permission to copy an attachment or message. If not you could get in to some trouble.
*Start off your email with a greeting. You've got to start it off with a good thing to be nice and introduce yourself.
*Include your name and subject. They might not know who you are and why are your emailing them.
*Check for spelling and grammar errors. Spell and have your email ake sense.