Objective: Unintentional injury is the leading cause of death for infants and young children in the USA, and the children of young mothers are at an even higher risk. Mobile health (mHealth) interventions have been successful in promoting behaviour change for many health conditions. This study assessed interest in mSafety, a text and video messaging mHealth intervention targeting injury prevention knowledge, behaviour and self-efficacy in young mothers. Design: Interviews with young mothers were conducted using a semi-structured interview guide. Setting: Interviews took place at a health clinic for teenage mothers and their children and at a local public charter high school which serves pregnant teenagers and young mothers. Method: A trained research assistant conducted semi-structured interviews with 20 young mothers (ages 15-20). Participants were asked both closed and open-ended questions to elicit opinions about their willingness to utilise mSafety. Results: The results of the interviews were positive. Participants were most interested in learning about the prevention of falls and poisonings, as well as safe sleep. Many emphasised that the language of the messages should be simple and that videos could be included to demonstrate methods of injury prevention. Most interviewees were willing to participate in a 'virtual home safety visit' in which participants text home photos to an expert to evaluate home safety practices. Conclusion: The concept of an mHealth intervention that would provide young mothers with the tools to prevent injuries among their children received positive feedback.