Snack Sack Deal: 30% Off Subscriptions! Last updated by Hello Subscription on October 6, 2017. Subscription Box Coupons & Deals / SnackSack Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification SnackSack is having a spooky subscription sale! Save 30% off any subscription with coupon code SPOOKY. Our theme for this month is “No Tricks. Only Treats!”. Exactly what it says, we’re sending you the most amazing collection of spooky Halloween & Fall inspired junk-free snacks!