This material has been consolidated from sound policy advice provided by major computer companies.
A general rule of life is that, if left undisturbed, people will tend to follow the path of least resistance and fall into bad habits.
This rule can also be applied to the way people use email. In the early days of email, in the late 1970s or early 1980s when companies first installed email systems, email was mainly for the use of company employees and relatively few people received mailboxes - it was almost a mark of respect to have an email address. Email was rather in the private domain. Few companies supported external access to mailboxes, and fewer still allowed employees to connect from home. Today, email is in the public domain, is ubiquitous, and each of us is able to access free email on many different systems and can connect to email using a variety of devices and different network links, ranging from notebook PCs across VPNs to RIM Blackberries across public wireless networks.