As the COVID-19 crisis began to take hold, state-based marketplaces (SBMs) were quick to respond to the first nationwide public health emergency since the Affordable Care Act created new coverage options in states. Informed by conversations with seven SBMs that established an SEP—Colorado, Maryland, Massachusetts, Nevada, New York, Rhode Island and Washington—this expert perspective highlights strategies that successfully drove enrollment, including: leveraging their SBM status to quickly and efficiently operationalize customer service in a new remote environment, directly engaging with existing customers as well as reaching out broadly to new ones, and adapting outreach tactics based on new insights regarding audience needs and behaviors to reach them most effectively.