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Digression: Web-based Email Clients

A significant trend in email usage in recent years has been the emergence of "Web-based" email systems (of which the most significant is probably hotmail.com). In these systems, the mail is delivered to an SMTP mailbox, as usual. However, the user agent function is provided by a Web server and CGI (see later) combination running on the same system as the mailbox is located. The great attraction is that the user can access their mailbox from any Web browser and any location.
 
The system diagram looks like:
Web Email System Diagram
The main disadvantage of these systems, compared to POP (and IMAP) based email clients, is their slower performance, and more limited functionality. There are also privacy and/or security considerations, since the user's mailbox is stored on a remote system where the attitudes, ethics and competence of the system manager are unknown.
 
Lecture 4: Applications #2: Email Copyright © 2003 P.Scott, La Trobe University Bendigo.

The tutorial for this lecture is Tutorial #04.
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Copyright © 2003 by Philip Scott, La Trobe University.
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