Rescue Box Sale: 15% Off RescueBox Subscriptions! Posted by Hello Subscription on January 15, 2018. Subscription Box Coupons & Deals / Rescue Box Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification This week use coupon code MLK15 to save 15% off any length subscription to RescueBox! Visit Rescue Box to get this deal!