If you frequently start new messages by typing the same thing again and again, you can save time by creating a template. To create a template:
Templates(make sure you type it in exactly like that, including the capital T).
Now, to start a new message from that template, go to your Templates folder and open the message. The compose screen will now open with the message just as it was when you saved it as a draft. When you save or send it, the original template is untouched, ready to be used again.