Do I really need to write my email this way?
[My Message here]
The email header already includes the to and from. The recipient should not be confused by who the email is directed at (himself) and who it's coming from if the greeting and salutation are missing.
Some people might say the greeting and salutation are there for politeness. Is this really true? Will you be offended if they're left out? As a website user interface designer, I was always taught by the great usability experts (Steve Krug, Jacob Nielson) that writing more than you need is disrespectful of a website user's time. To me, leaving out the greeting and salutation makes the email easier to read.