In cities tenants struggle with package deliveries to their buildings. There are no available locker systems for unstaffed buildings. I founded Parcelist 4 years ago to solve this problem. We built an intelligent locker system that can accept packages from any carriers and can automatically notify recipient with over 99% accuracy. Landlords pay $11 K for the locker system, tenants pay $9.99/month for subscription. We generate predictable revenue.