1.Avoid long sentences because you will eventually get off topic then you will lose time.
2.Do not attach unnecessary files because it will take more of your time by making that file and presenting it.
3.Answer swiftly because it will make an expression and will save time.
4.Keep your language gender neutral because you will confuse some people of what you are saying.
5.Use proper grammar,spelling & punctuation because it mite just sound just like a long sentence.
6.Use a meaningful subject because if you don't use a meaningful subject it would look like you did it like you were not trying.
7.Do not write in capitals because it would look like
8.Read the Email before you send it because it might afend the people who read it.