You can text LOVE to 727-272 and get a Free Redbox Code that will be valid for today, 10/9/13.
Note: The text will confirm that you wish to continue to receive text offers from them.
You should also be able to use code MCPC413S to get another Free Redbox Rental through 10/23/13.
Thanks, Couponing For 4!
Keep in mind that codes can expire at any time so use them at the risk that they may not work.