* Do not use block capitals. They give the impression you are shouting at your reader.
* Do not use 'emoticons' (combinations of letters which represent emotions) in formal emails.
* It is best to open and close an email using 'Dear' at the beginning and 'Best wishes' or 'Regards' at the end.
* Avoid over-familiar language, slang or abbreviations - such as LOL (laugh out loud) or BTW (by the way).
I hope this helps, Good Luck! :)
