We develop and evaluate the effectiveness of interventions designed to address self-stigma and increase the uptake of mental health support among those Ukrainian refugees who are in need of such support, in a novel social media design. The interventions differ in both content and dissemination strategy, and are evaluated in a randomized controlled experiment (RCT). (Joint work with Alexandra Avdeenko, Luc Behaghel, Esther Duflo, Yagan Hazard, Alexander Moldavski, and Nicolas Rüsch.)