“…Engagement is considered as the public's interaction with an organization in the context of social media (Taylor & Kent, 2014), which can take different forms such as “likes,” “comments,” and “shares” (or retweets). Research on variables that are associated with engagement in NPOs' social media has begun focusing primarily on Facebook (Maxwell & Carboni, 2016; Saxton & Waters, 2014) and, to a minor extent, Twitter (Guo & Saxton, 2018; Smith, 2018; Yue et al, 2023). Following previous literature, we identify three different types of variables that are not usually studied together: organizational characteristics (e.g., size, age, and origin of funds), social media use (e.g., number of followers, social media activity, and presence on multiple social media platforms), and post content (e.g., type of post content, effect of visual posts containing photos or videos, and use of interactive tools).…”