Digitalization, technological development and online platforms are strongly affecting both the way postal and delivery operators are managing their services, as well as their role on the market. Strong emphasis was attributed to the assets of Postal Operators (POs) and their added value in the digital age, as well as on new business strategies. This volume presents original essays by prominent researchers in the field, selected and edited from papers presented at the 27th Conference on Postal and Delivery Economics held in Dublin, Ireland, 22-25 May, 2019. Topics addressed by this volume include the fragmentation of the postal supply chain, blockchain and digital postal services, and the fading of traditional postal market boundaries. This book will be a useful tool not only for graduate students and professors, but also for postal administrations, consulting firms, and federal government departments.