Mantry Cyber Monday Sale: 20% Off All Mantry Crates! Last updated by Hello Subscription on November 26, 2018. Cyber Monday 2018 Subscription Box Deals / Cyber Monday Subscription Box Coupons & Deals / Holiday Subscription Box Deals & Doorbusters / Subscription Box Coupons & Deals / Mantry Coupons / Food & Snacks Cyber Monday 2019 Coupons / Men Cyber Monday 2019 Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Cyber Monday Sale on Mantry! Save 20% on all Mantry crates in the shop or on a monthly plan with coupon code BLACKFRIDAY20 Check out all of the Cyber Monday Subscription Box Deals!