Can I use coupons not provided by RebatesMe and still get cash back?
If you use a coupon not provided by RebatesMe, you may not be eligible to earn cash back on the purchase. Even coupon codes you receive in an email or regular mail directly from the merchant can invalidate your cash back. The merchant oftentimes use coupon codes to determine the source of the order. So even if you click through RebatesMe, but use a coupon code not found on RebatesMe, the merchant will credit the order to the source of the coupon code and not RebatesMe.