Purpose This paper investigates the impact of social-media marketing elements, namely entertainment, customisation, interaction, electronic word-of-mouth (EWOM) and trendiness, on consumer-brand engagement and brand knowledge. Design/methodology/approach Using an online survey, the study collects data in Hong Kong from 214 experienced social-media users, as indicated by their consumption of a durable technology product, a smartphone. We used partial least squares structural equation modelling (PLS-SEM) to test the links between social-media marketing elements, consumer-brand engagement and brand knowledge. Findings The results reveal that interaction, electronic word-of-mouth and trendiness are the key elements directly influencing consumer brand engagement, then strengthening brand awareness and brand knowledge. This contrasts with the non-significant results found for the influence of entertainment and customisation on consumer-brand engagement. Research limitations/implications - Having cross-sectional nature, the study focuses on one single product, smartphones, at one location, Hong Kong. Future research may enhance the generalisability of the findings by replication in other countries with diverse cultures, such as countries in Latin America and Africa and examine other industries and other products, such as the service sector and convenience products with a low involvement level. Practical implications - Marketers may strengthen consumer-brand engagement by using content that is trendy, along with encouraging interaction and positive EWOM on social-media platforms, in order to build strong and positive brand knowledge in consumers' minds. Originality/value This study contributes to the branding literature by providing an understanding of the role of social-media marketing elements in the brand-building process. Social media is a marketing channel recognised by its effectiveness in communicating brand-related information and its role as a means to stimulate consumers' brand engagement and brand knowledge. However, how effective these elements are for these purposes remains to be established. By empirically testing a theoretical model, this study confirms that specific social-media marketing elements, namely interaction, EWOM and trendiness, are critical drivers in the brand-building process in Hong Kong.
