简述了邮件代理系统的主要功能和运行流程,重点阐述了XML技术在该系统用户配置文件中的应用。通过分析PDA等移动设备在电子邮件方面的不足,提出了一个邮件代理系统的设计框架及实现流程,给出了配置文件的功能介绍和XML文档结构的树型表示,以及配置文件的定义和具体解析过程。最后详细阐述了如何运用XML技术具体设计与实现用户的配置文件,并对整个系统进行了评价和展望。 The main functions and operation flow of the mail agent system are briefly described, and the application of XML technology in the user profile of the system is expounded emphatically. By analyzing the shortcomings of mobile devices, such as PDAs, in e-mail, this paper proposes a design framework of mail proxy system and its implementation process. It also presents the function introduction of configuration files and the tree representation of XML document structure, as well as the definition and specific configuration files Analysis process. Finally elaborate how to use XML technology to concretely design and realize user’s configuration file, and evaluate and prospect the whole system.