Okay, so it's kinda annoying having to press the 'New Post' button everytime, so you should add in the 'Quick Reply' button to make that go awaayyyy.
Go to:
*Administration Panel
*General
*Messages and Emails Configuration
*Scroll down 'til ya see the 'Allow Quick Reply' option.
*Click 'yes' and then 'save!'
^In that order^
Trust me, it helps SO MUCH!