Rent two movies from Redbox at one time and get an email with a coupon for a free Redbox movie rental within 72 hours. The deal ends Feb. 14, 2011. Up to one free rental per customer per day. Provide an email address at checkout to get the freebie movie rental code. It's unclear how long you have to redeem the free one-day rental.
Most Redbox movies are $1 per night plus tax. Blu-ray discs are $1.50 and video games are $2. The free code is for the $1 rentals for one night only. If you keep the movie additional nights, you'll pay.
Caveats: The free code is not valid for movies reserved online. Valid only at participating locations. Cannot be redeemed online or combined with other offers. Only one coupon code per rental.
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Redbox Coupon: Rent Two, Get One Free