https://www.supereasy.com/doordash-coupons-promo-codes-for-existing-users/ DoorDash offers special promo codes on your first order, when you refer friends and sometimes specials to returning users. For DoorDash new users, the offer is a $0 Delivery Fee on orders over $10 for your first 30 days. For Quebec, however, DoorDash charges you a $1 Delivery Fee. New users get a free $15 credit for $5 off each of your first 3 ...