Consumer engagement literature highlights several potential factors that may influence consumer engagement, including emotionality, direct firm actions, and product involvement (Harmeling et al. 2017; Pansari and Kumar 2017). We derive our key factors from this literature and add new factors, such as overall campaign intent, influencer characteristics (i.e., source expertise and post content), and level of involvement elicited by the social media platform. The customer engagement activ- ity we focus on is social media interactions with sponsored influencer content, and we operationalize this as likes and com- ments on sponsored posts.