台灣人常出現的Email issue

X : We need to cost down on this project. (“cost down” is not a word)
X : Please feel free to contact with me. (“with” is unnecessary)
X : If you have any question, please let me know. (“questions”)

Subject Lines:

Subject Lines aren’t sentences, so don’t use period(.)

Greeting:

X: Dear Miss Lu, (Ms. is correct, because we don’t know she is married or not)
X: Dear Client,
X: Dear both,
X: Dear CEO Bob Lu, (Don’t use title)
X: Dear Boss Huang,
X: Dears,

The Body:

These are usually separated by paragraphs
Don’t overusing exclamation mark(!)

Closings:

X: Best Regards, (“regards” is correct)
X: See you~~~
X: Tks,