MIME的编辑和解析类。不用了解MIME的详细协议也能生成各种标准格式的email文件。我就是用这个类很快的写了一个程序来批量生成email文件，然后用dreammail等邮件工具群发，比较不容易被邮件服务器认为是垃圾邮件。-MIME type of the editing and analysis. Do not understand the details of the agreement MIME can also generate a variety of standard format of email documents. I use this type quickly wrote a program to generate bulk email file, and then dreammail e-mail tools such as mass, not easy to compare the mail server as spam.