Recent discussions in the business press query the contribution of customer-support outsourcing to firm performance. Despite the controversy surrounding its performance implications, customer-support outsourcing is still on the rise, especially to emerging markets. Against this backdrop, we study under which conditions customer-support outsourcing to providers from emerging versus established economies is more versus less successful. Our performance measure is the stock-market reaction around the outsourcing announcement date. Although customer-support outsourcing is on average evaluated more favorably for providers located in emerging markets as opposed to established economies, approximately 50% of the outsourcing announcements in our sample are evaluated negatively. We find that the shareholder-value implications of customer-support outsourcing to emerging versus established economies are contingent on the nature of the customer support that is being outsourced and on the nature of the outsourcing firm. Customer-support outsourcing to emerging markets is less beneficial for services that are characterized by personal customer contact and high knowledge embeddedness than for customer-support services that involve impersonal customer contact and are low on knowledge embeddedness. Firms higher in marketing resource intensity and larger firms benefit more from outsourcing customer-support services to emerging markets than firms lower in marketing resource intensity and smaller firms.