TWO New FREE Redbox DVD Rental Coupon Codes! March 10, 2016 by Jennie The links in the post below may be affiliate links. Read the full disclosure.Print Email Redbox has a new FREE DVD Rental code available when you text PUSH to 727272! Plus, for a second free rental code you can text SPRING to 727272. These codes are only valid online or in the Redbox App.