Email Etiquette

In IT we  learned the rules abut how to send a email.
rule 1: Use salutation
rule 2: Include a specific subject line
rule 3: Keep it to the point
rule 4: Be professional
rule 5: Sing & proof read

I learned that it is very important to be kind in a email.
I also learned not to put such important information and rather to talk to the person.
Never use slang in a email.
Try avoid using CAPITAL LETTERS because if you read a word in capital letters it can be as if they are shouting at you when they don't mean it like that.
Always go and check your writing and make sure that you have not made a spelling or grammar error.