If you would like to have have emails turned directly into priorities, you can generate a unique email key. When you email this address, it will turn that email into a priority with the subject as the title of the priority and the body of the email as the description of the priority. To do this:
Go to your profile
Click on the tab at the left that says “keys”
Click the circular arrow at the right side of the dialogue box to generate a new email key.