The number of refugees arriving in Europe has increased dramatically in 2015. While governments, initiatives, and volunteers have invested substantial effort into supporting refugees, an information deficit impedes the efficacy of this collaboration. Information platforms are used to tackle this information deficit. However, the onboarding process of information providers is a critical challenge for the platforms?overall success. On the basis of observations, interviews with information providers and user experience tests, we drafted a case study describing the governance strategies applied to establish a sustainable onboarding of information providers on a nonprofit information platform for refugees. Contributing to recent literature on platform governance, our results show that governance mechanisms are implemented differently for nonprofit platform ecosystems than for commercial platform ecosystems. Building on our results, we provide practical implications by deriving a platform governance strategy that supports a sustainable onboarding of information providers.