RawBox Earth Day Flash Sale: Get 50% Off Your First Box! Posted by Hello Subscription on April 23, 2018. Subscription Box Coupons & Deals / RawBox Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification RawBox is having a huge Earth Day flash sale – the biggest of the year! Get 50% off your first box with coupon code EARTHDAY18. Valid until 4/24. You can also save 15% on your first subscription with coupon code WELCOME15OFF. Are you getting RawBox?