The COVID-19 pandemic affected many countries across the globe tremendously. One of the consequences of this pandemic was the closure of educational institutions to curb the spread of the virus. In Malaysia, the Ministry of Education (MOE) encouraged teachers to adopt online educational technologies, such as Google Classroom, in executing teaching and learning processes during the pandemic. However, the sudden transition of the nature of education required teachers to prepare themselves to carry out online education in an instant. Past studies revealed that ICT competence, infrastructure and online resources and working environment affect teachers' usage of online educational technologies in their teaching. This study examined the relationship amongst these three factors and teachers' intention to adopt online educational technologies. This study also identified the most significant factor that affects teachers' behavioural intentions. A total of 153 Malaysian ESL teachers participated in this study via a survey questionnaire. Findings revealed that although the working environment was moderately correlated with teachers' behavioural intentions, the other two factors were strongly correlated with teachers' behavioural intentions. This study found accessibility to infrastructure and online resources to be the most significant factors that affected teachers' behavioural intentions.