Launched in 2014, the three-year Pilot Mobile Health Program is an innovative approach to engaging pregnant and postpartum women enrolled in Medicaid. The program delivers evidence-based health education messages and links these women to needed community-based resources, using a free text messaging service as the core intervention. It is being implemented with Medicaid agencies in California, Louisiana, Ohio, and Oklahoma. In the first year, progress has included a substantial growth in partnerships to support outreach.