Remember you're creating a written record. When people see your name attached to a message, it should matter to them and not be a waste of their time. As with any correspondence, there are some basic rules. Improper spelling and grammar are inexcusable. They make both the company and the sender look unprofessional.
People receive dozens, sometimes hundreds, of e-mail messages each day.
If they don't recognize your name and don't know what the message is about, they may treat your message like spam and delete it. E-mail can be a little looser and less formal than other forms of communication, but that doesn't mean you shouldn't pay attention to these cues. As in all written communication, it's difficult to strike just the right tone. Being friendly doesn't mean being cute, warns Macri. Instead, convey warmth through your tone and language, and by weaving in personal references that relate back to earlier communication.