Marketing mix is part of marketing science that can be managed by a company to influence customers' behaviour. This research was aimed to analyze and explain the effect of marketing mix on customer trust, purchase decision, customer satisfaction and behavioural intention. In other words, it was aimed to figure out customers' experience before purchase, during purchase decision making, and after purchase. The research was conducted at Excellent Translation, a company which focused its marketing on online marketing. A total of 145 customers were selected using random sampling technique. SmartPLS was used for data analysis, from which significance level of 0.05. The results of the research showed that marketing mix had a significant effect on trust and purchase decision, that purchase decision had a significant effect on customer satisfaction, and that customer satisfaction had a significant effect on behavioural intention.