Return to Sender, a project funded by Europeana and developed in collaboration with the University of Coventry and Solent University, aims to explore WW1 postcards in the Europeana 1914-1918 collection and the collections of contributing archives from across Europe. The website offers an innovative new map allowing a user to trace the movement and communication of people during the Great War through their postcards. The site also adds a contemporary element highlighting the physical and digital archives that now hold these priceless documents. See for yourself at https://returntosendermap.eu/map/