A web site can become a powerful way to deliver services for those organizations in the business of providing people with information. Because it's so easy to update a web site and have the vital details available instantaneously, the web is a perfect way to encourage people to act on issues that greatly concern them. An organization may wish to keep up with legal, political, scientific or other mission related developments. Alternatively, it may wish to learn about grant opportunities. It would be hard to overemphasize the advantages, cost savings, or numerous virtues of email.
Email offers the best of the phone and the mail.
It is as fast and as reliable as the phone, while compensating for the frailties of human memory by preserving a written record, as does the mail. Further, email allows for asynchronous communication, meaning that one can read one's email on one's own time, rather than having to play telephone tag.