The evolving neurobiological and psychological understanding of emotions, specifically positive emotions, provides fascinating insights into how learners' emotions can be evoked, and online learning environments can be crafted to maximize student engagement. Engaged online learners are more active, self-directed, and responsible; they persist and find academic success at higher rates. This article aims to maximize learner outcomes by combining the research and frameworks of online student engagement with the neuroscience and psychology of positive emotions. This research suggests that positive psychology interventions, which have been consistently correlated to positive organizational outcomes when similarly used in business initiatives, also apply to the online adult literacy classroom. The infusion of practical positive psychology principles and the purposeful use of positive emotions in the online setting are presented from three distinct perspectives: creating a positive culture, facilitation, and academic content.