1) Click the File tab at the top-left corner of the Outlook display.
2) Click the box to Automatic Replies box to the immediate left of the Automatic Replies (Out of Office) text.
3) In the Automatic Replies box that appears, click the circle to the left of the Send automatic replies option.
4) Fill the box with the desire information and click ok
You don’t need to add rules, as you want the auto reply to be sent for every incoming email.