The National Institutes of Health (NIH) is inviting applications for the "Laboratories to Optimize Digital Health" initiative, aimed at enhancing the reach and effectiveness of digital mental health interventions through innovative research projects. This funding opportunity focuses on developing digital health test beds to optimize existing evidence-based interventions, particularly targeting vulnerable populations and addressing health disparities. The initiative supports clinical trials and encourages collaboration between software developers and researchers to understand the mechanisms of action behind these interventions. Applications open on January 5, 2025, with multiple due dates leading to awards expected to begin in July 2025. For further inquiries, applicants can contact NIH Grants Information at grantsinfo@nih.gov, and additional details can be found at NIH Grants.