This chapter investigates the extent of digital marketing usage in South Africa, its perceived impact, and factors that influence its adoption in the South African context. The methodology adopted is the systematic review using the preferred reporting items for systematic reviews and meta-analyses (PRISMA) framework. The results show that digital platforms currently used include mobile marketing (SMS) and social media platforms. The findings suggest that SMS-based marketing may be appealing to other market segments but not to young adults. The findings further suggest that social media marketing has had a significant influence on the purchase intentions among South African millennials (Generation Y). Moreover, the findings suggest that marketers, in their quest to influence customer purchasing decisions, should consider the knowledge that social media followers have regarding a subject matter (such as a product), and make an effort to educate those followers on the subject (or product) before suggesting a purchase.