Research And Design Of Web Based On-line Email System

The purpose of Internet users, access to information is the top of all. E-mail is an important means of communication which people communicate with each other, Almost every user has used the Web-based e-mail, and the first thing that many new users in the Internet is to register a Web email account.Web based e-mail, users browse Web pages, enter a user name and password, a Web server, e-mail program running in dynamically generated Web pages listed on the user's e-mail, so users do not need to download messages to their own computer. Since no client software, so any user can query the system using any Internet access to their e-mail. This and the previous client / server e-mail form a strong contrast. The client / server e-mail, the user uses a client-side e-mail applications (such as Foxmail or Outlook). This client application to use its stored user name and password to log on to a mail server --- usually a POP server, mail server to retrieve the user's e-mail, mail downloaded to the user can read and control the customer side of the memory. Because the client application requires a certain configuration and messages in local storage, so users can only read e-mail on their computers, while in other computers to manage their e-mail is very difficult.Rapidly growing popularity of Web e-mail as quickly as possible to change the way we use computers. People talked about a topic Web e-mail providers like Hotmail theater experience, the start-up companies seem to be in overnight U.S. software giant Microsoft spent millions of dollars to purchase. Web e-mail has become the way people work and communicate essential life tool.E-mail is an indispensable tool for the Internet, existing in the use of basic e-mail program is for personal and desktop application development, and not entirely suitable for use on public terminals, which is mainly caused by defects in several areas.This system is designed for IIS-based mail system, development tools for the ASP, with SQL SERVER database development, application, third-party components Jmail, and use the SMTP protocol and POP3 protocols.E-mail system based on the received e-mail account, password, email address translation information, and then test the network; to e-mail server to retrieve mail, send e-mail server to retrieve mail messages in the mailbox and displays brief information, including the sender address, Letter time, the message subject, message size, for the user to read; when the user send out the message to see the program instructions, close the connection with the e-mail server. Functions to meet the case of multiple accounts to achieve high security purposes.