An increasing number of online retailers (e.g. Amazon) are investing billions of dollars in building their own delivery services (ODS) and delivering products to customers’ homes through their own logistics network. ODS not only improves delivery quality but also builds customer trust, which together increases customers’ monthly spending, purchase frequency, and the number of items ordered. ODS has greater value for markets with lower trust levels, infrequent customers, high-risk product categories, and consumers who prefer the focal retailer.