Insight into the reasons why people adopt or reject technology is one of the most challenging issues in information technology research. This paper draws on the Electronic Commerce Technology Acceptance (ECTA) framework [1], which is in turn based on Technology Acceptance Model (TAM) [2–3], and examines Jordan government's employees' attitudes towards adopting and use Electronic Mailing systems within their job. A quantitative survey is used to establish and illustrates employee's behavioural intention and decision to e-mailing systems. The main influencing issues that are discussed in this paper affect these employees imply perceived usefulness, perceived ease of use, employees' attitudes towards new technologies, and behavioural intention to use. These various issues suggested in the Technology Acceptance Model (TAM) [3–4]. Whereas the extended Technology Acceptance Model (TAM) has been made to include the external social factors proposed in this paper such as trust, cultural beliefs, and sociology of technology. Eventually, the significant insight emanated from the findings identifies ways of assisting and spurring employees to make use of technology effectively.