PupBox Coupon: Get 50% Off First Month! Posted by Hello Subscription on April 2, 2019. Subscription Box Coupons & Deals / PupBox Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Check out this PupBox coupon! Get 50% off your first box with coupon code HELLOSUB50. Valid on any 3, 6, or 12 month subscriptions. Save 50% on Pupbox! See our past PupBox reviews to find out more about this subscription! Visit PupBox to grab the deal!