电子邮件等网络通信方式伴随信息化的发展显得越发重要,相比传统通信方式,它的及时性、方便性、低费用等特点使它得到广泛地应用。个人、单位、商业都越来越依赖电子邮件做为生活通信和商业往来的重要手段。但是近几年的进程,电子通信出现以下特点: 1) 网络营销开始大量涌现,垃圾邮件的数量急速增加,用户不堪负重。通常引以为豪 With the development of information technology such as e-mail, network communication becomes more and more important. Compared with the traditional communication methods, it has been widely used because of its timeliness, convenience and low cost. Individuals, organizations and businesses are increasingly relying on e-mail as an important means of communication and business communication. However, in recent years, the following features have emerged in electronic communications: 1) The rapid emergence of online marketing has led to the rapid increase in the number of spam emails and the overwhelming load on users. Often proud