< AN style="FONT-SIZE: 16pt; FONT-FAMILY: 楷体_GB2312; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-a i-language: EN-U mso-fareast-language: ZH-C mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件客户端软件

< AN style="FONT-SIZE: 16pt; FONT-FAMILY: 楷体_GB2312; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-a i-language: EN-U mso-fareast-language: ZH-C mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">

< AN style="FONT-SIZE: 18pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">文< AN style="FONT-SIZE: 18pt; LINE-HEIGHT: 150%; mso-bidi-font-size: 12.0pt"> < AN style="FONT-SIZE: 18pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">献< AN style="FONT-SIZE: 18pt; LINE-HEIGHT: 150%; mso-bidi-font-size: 12.0pt"> < AN style="FONT-SIZE: 18pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">综< AN style="FONT-SIZE: 18pt; LINE-HEIGHT: 150%; mso-bidi-font-size: 12.0pt"> < AN style="FONT-SIZE: 18pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">述< AN lang=EN-US style="FONT-SIZE: 18pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">随着计算机网络的发展，人与人之间信息传输的时间大为缩短。许多文件都是以电子邮件的形式来传送；通常使用过计算机的人，或多或少都会用到< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Email< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">来传输信息。通过电子邮件，人们可以进行文字、图片、视频、声音、数据文件等的传递。随着< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Internet< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">网和< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">WWW< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">网的广泛普及，电子邮件的使用迅速增多起来。电子邮件的使用不仅在数量上有突飞猛进的发展，其重要性日益增加。据< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">IDC< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">（国际文献资料中心）统计，目前全球电子邮箱总数已超过< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">5< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">亿。而据< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">C IC< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">（中国互联网络信息中心）的最新调查，中国网络用户拥有< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">E-mail< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">帐号的平均值为< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">2.6< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">个，用户平均每周收到电子邮件数为< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">12.9< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">封，发出电子邮件数为< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">8.2< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">封。这说明电子邮件已不只是电话的替代品，它可以而且已经在广泛地应用着。当然，电子邮件也为人们带来了不利的一面。由于其接收发送电子邮件很少受到限制，造成电脑病毒、大量的垃圾邮件盛行，甚至个人隐私及安全受到了严重的威胁。但是，电子邮件作为当今社会主要的信息传播载体，发展趋势不会因此而停止。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">目前由于电子邮件广泛而频繁的使用，国内外各大网站都提供了电子邮件服务，而且有些是免费服务。人们日常使用的电子邮件有很多，但是就方式来说只有两种。第一种是在网站上使用电子邮件，也就是一般所说的< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Web< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">使用方式，通常人们使用时必须首先登录到< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">WebMail< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">服务器< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">(< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">网页邮件服务器< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">)< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">，通过身份验证后才可以查阅收发邮件。但是用户不能总是处于登录状态，也不能每时每刻发送接收邮件。如果长时间没有对< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">WebMail< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">服务器进行操作，则被认为登录超时，自动退出系统。用户需要再次登录邮件服务器，才可以进行操作。由于频繁的登录填写帐户和密码，造成了用户对电子邮件的使用产生不便。这时出现一种不需要访问< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Web< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">页面，只需要您在本地机器上使用电子邮件的相关软件，就可以直接收发、管理电子邮件。它既能支持全部的< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%"> Internet < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件功能，又能改正< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">WebMail< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">服务器使用的种种缺点，方便用户发送接收邮件。目前以微软的< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">OutLook Expre < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">和国产< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">FoxMail< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">为两款经典代表。两者都是著名的客户端< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Email< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">软件，功能不差上下。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">客户端电子邮件软件一般都比< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">WebMail< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">服务器（网页邮件服务器）提供更为全面的功能。使用客户端软件收发邮件，登陆时不用下载网站页面内容，速度更快；使用客户端软件收到的和曾经发送过的邮件都保存在自己的电脑中，不用上网就可以对旧邮件进行阅读和管理。同时实现多用户，多邮箱帐户，多< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">POP3< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">支持，对邮件管理更加快捷方便。正是由于电子邮件客户端软的种种优点，它已经成为了人们工作和生活上进行交流必不可少的工具。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件（简称< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">E-mai1< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">）又称电子信箱、电子邮政，它是—种用电子手段提供信息交换的通信方式。它是全球多种网络上使用最普遍的一项服务。这种非交互式的通信，加速了信息的交流及数据传送，它是—个简易、快速的方法。通过连接全世界的< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Internet< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">，实现各类信号的传送、接收、存贮等处理，< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%"> < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">将邮件送到世界的各个角落。< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%"> < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">到目前为止，< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%"> < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">可以说电子邮件是< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Internet< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">资源使用最多的一种服务，< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">E-mai1< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">不只局限于信件的传递，还可用来传递文件、声音及图形、图象等不同类型的信息。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件不是一种“终端到终端”的服务，是被称为“存贮转发式”服务。这正是电子信箱系统的核心，利用存贮转发可进行非实时通信，属异步通信方式。即信件发送者可随时随地发送邮件，不要求接收者同时在场，即使对方现在不在，仍可将邮件立刻送到对方的信箱内，且存储在对方的电子邮箱中。接收者可在他认为方便的时候读取信件，不受时空限制。在这里，“发送”邮件意味着将邮件放到收件人的信箱中，而“接收”邮件则意味着从自己的信箱中读取信件，信箱实际上是由文件管理系统支持的—个实体。因为电子邮件是通过邮件服务器（< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">mai1 server< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">）来传递文件的。通常< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">mail server< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">是执行多任务操作系统< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">UNIX< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">的计算机，它提供< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">24< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">小时的电子邮件服务，用户只要向< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%"> mail server< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">管理人员申请—个信箱帐号，就可使用这项快速的邮件服务。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件的工作原理：< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">（< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">1< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">）< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%"> < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件系统是一种新型的信息系统，是通信技术和计算机技术结合的产物。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件的传输是通过电子邮件简单传输协议（< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Simple Mail Tra fer Protocol,< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">简称< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">SMTP< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">）这一系统软件来完成的，它是< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">Internet< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">下的一种电子邮件通信协议。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

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< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">（< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">2< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">）< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%"> < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件的基本原理，是在通信网上设立“电子信箱系统”，它实际上是一个计算机系统。系统的硬件是一个高性能、大容量的计算机。硬盘作为信箱的存储介质，在硬盘上为用户分一定的存储空间作为用户的“信箱”，每位用户都有属于自己的—个电子信箱。并确定—个用户名和用户可以自己随意修改的口令。存储空间包含存放所收信件、编辑信件以及信件存档三部分空间，用户使用口令开启自己的信箱，并进行发信、读信、编辑、转发、存档等各种操作。系统功能主要由软件实现。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

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< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">（< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">3< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">）< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%"> < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">电子邮件的通信是在信箱之间进行的。用户首先开启自己的信箱，然后通过键入命令的方式将需要发送的邮件发到对方的信箱中。邮件在信箱之间进行传递和交换，也可以与另—个邮件系统进行传递和交换。收方在取信时，使用特定帐号从信箱提取。

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">一< AN lang=EN-US>.功能概述< AN lang=EN-US>

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">此次设计我们将以国内久负盛名的< AN lang=EN-US>FoxMail电子邮件客户端软件为范本来主要是实< AN lang=EN-US>

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">现发送邮件，接受邮件这两个最基本但是也最重要的功能，以及其他的发送附件，发送< AN lang=EN-US>

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">多媒体附件，实现代理服务器登录< AN lang=EN-US>SMTP服务器< AN lang=EN-US>,以及实现用户可以自主编辑的通讯簿等< AN lang=EN-US>

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">等附加功能。而我个人主要负责电子邮件的发送这个功能。< AN lang=EN-US>

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">二．编程环境选择< AN lang=EN-US>

< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">< AN style="mso- acerun: yes"> < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">语言选择< AN lang=EN-US>:Visual Stdio 2003中的< AN lang=EN-US>C#(C Sharp)

< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">< AN style="mso- acerun: yes"> < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">操作系统选择< AN lang=EN-US>: WindowsXP系统< AN lang=EN-US>

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">三．程序功能框图< AN lang=EN-US>

< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">

< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">

< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体">四．功能的实现< AN lang=EN-US>

< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">C#< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">语言，作为微软官方主推语言，拥有和< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">VB< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">一样的对于开发界面窗体的便利，同时又保持了< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">C < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">的高效和便利。而且作为< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">C< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">语言和< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">C < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">的发展，它在完全兼容< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">C < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">的基础上又有乐很大的发展。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">C#< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">作为一种面向对象的语言，也为以后程序的维护以及扩展提供了方便。而且最重要的是将来即使和< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">VC < AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">结合的时候也不会存在问题。< AN lang=EN-US style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%">

< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">对于发送邮件来说，< AN style="FONT-SIZE: 12pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-ascii-font-family:

< AN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-ha i-font-family: 'Times New Roman'">２．本课题要研究或解决的问题和拟采用的研究手段（途径）：< AN lang=EN-US>