Letter Metadata Prototype is an experimental service for capturing correspondence metadata, keeping its focus on usability and efficiency.

Letter Metadata Prototype was created as part of the project Epistolary Networks. The project investigates the correspondences and social networks of German scholars which went into exile during Nazi Germany. The project was funded by the German Federal Ministry of Education and Research (BMBF) [grant number 01UG1354C]. The project is a collaboration between the Trier Center for Digital Humanities, Deutsches Literaturarchiv Marbach, and the Martin-Luther-University Halle-Wittenberg.