Pilot Study of Health System/Community Partnership for Enhanced Outreach to Prevent Suicide Attempts

The goal of this clinical trial is to test an enhanced outreach intervention (EOI) delivered by Samaritans of Boston (a community organization that provides support during mental health crises) for people after they leave an emergency department (ED) visit for suicidal thoughts. The main questions the trial aims to answer are: * Is the EOI feasible and acceptable? * Can the EOI be delivered with fidelity by Samaritans staff? Participants will: * Receive outreach (by call or text) once per week for 12 weeks after ED visit. During these conversations, Samaritans staff will ask participants questions about their suicidal thoughts and behaviors, develop and review a list of coping skills to use if they have suicidal thoughts, and discuss plans for receiving mental health care. * Receive caring messages from Samaritans staff at least once per week. * Be asked to complete monthly self-report questionnaires, and participate in a phone interview with study staff at the end of the study.