Birchbox Man: Free Bonus Box with Subscription! Today ONLY! Posted by Brandy on November 30, 2016. Holiday Subscription Box Deals & Doorbusters / Subscription Box Coupons & Deals / Birchbox Man Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Today Only when you subscribe to Birchbox Man and use coupon code 2FOR1 you’ll get a FREE extra bonus box! Plus you get one month free when you check out with a 6 month subscription ($20 off the month-to-month price)!