RocksBox Coupon: Get Your First Month FREE! Posted by Hello Subscription on November 5, 2018. Subscription Box Coupons & Deals / Rocksbox Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification RocksBox has an amazing offer for new subscribers – get your first month FREE! Use the coupon code MOMMYSPLURGEXOXO to get the deal.! See our Rocksbox reviews to see the awesome jewelry we received in the past. Are you getting RocksBox?