Materialistic lifestyle, along with the increase in the world’s population, is leading to unlimited hyper-consumption due to raising the global demand for services and goods. Marketing strategies can be acclimatized to offer more viably to the vital segment of buyers by engaging e-mavens, their antecedents of big five personality traits, frugality, and sustainable consumption behavior are needed to comprehend. The study assessed the novel endeavor to exhibit a potential relationship among the big five, e-mavenism, frugality, and sustainable consumption behavior in social networking sites. This body of knowledge adds to comprehend sustainable consumption behavior and fills many gaps by using data from a sample (n = 387) of social networking sites users from China. Causal modeling technique (SEM) is affianced to evaluate the study hypotheses. The data from an online survey disclose a positive association of agreeableness, conscientiousness, extraversion, neuroticism, and openness to experience with e-mavenism. The results affirm that e-mavenism is positively correlated with frugality. Moreover, frugality is vital in the growth of sustainable consumption behavior as well. Eventually, e-mavenism positively influences sustainable consumption behavior. These results enhance understanding of sustainable consumption behavior and provide an opportunity that marketing managers may apply these constructs into their strategies to achieve competitive advantage.