Sustainability engagement is suggested to increase future company value. Collaboration between companies can assist them to become more sustainable. Even though collaboration can be seen as instrumental in developing more sustainable companies, the rise of e-business has changed the game in terms of attaining high performance.Thus, this study investigates the relations among supplier collaboration, sustainability, and market performance in the context of e-business. Specifically, the aim of this study is to determine how supplier collaboration leads small e-businesses to develop e-business sustainability and, in turn, deliver enhanced market performance. The data were collected with a cross-sectional random sampling of small online store operators in Finland. Supplier collaboration was found to influence market performance via e-business sustainability. The results offer implications for firms operating in e-business by supporting collaboration with suppliers and sustainability values while maintaining high market performance.