This is the description of the CCCL workshop and its context, and the relevant slides. In this workshop, we explore the affordances developments in the field of digital humanities have established in relation to epistolary scholarship. In what ways can we enrich collections of letters to help guide researchers and a broader audience in the exploration and use of this particular type of historic data? We supply the workshop participants with use cases provided by previous and ongoing partner projects within the Huygens Institute to aid shared thinking, hands-on experience and dialogues on best practices. We zoom in on the following three subtopics: i) current developments concerning the use of metadata and restricted vocabularies and ontologies; ii) desirable and attainable enrichments to contextualize collections of letters; iii) imaginable and beneficial crossovers between related but non- epistolary collections and the added value of establishing such broader context.