Pine email tutorial from the Computer Science Department. Some information on the Eudora email program from Dr. Clark. Eudora for Macintosh and Windows from Cal Poly Enterprise Computing The Mining Company's Urban Legend Site Electronic mail, or email, is probably the most important use of the Internet, even more important than the World Wide Web, because it allows you to communicate with both individuals and groups.
Email is fast, in fact it is virtually instantaneous if the computer is working.
However, email is not without problems. One issue is privacy. Although managers of computer systems and others are not supposed to read email, and will often claim it's impossible for them to read messages, you should never assume your messages are private. There are encryption programs available, but for every programmer writing an encryption routine, there are 1000 others writing routines to decode it. Government agencies such as the National Security Agency can probably decode pretty much everything.