smtp的动态库，邮件发送过程中用的动态库，里面有详细的代码，接口简单无需文档，自己研究一下就可以使用了， 性能稳定。-smtp dynamic library, mail sent to the process of making DLL containing a detailed code, simple interface without documents, their study on the use of the stable performance.

一个GPRS短信接口，做成了DLL方式，以API方式提供用户使用，提高可靠性及简单性-a GPRS messaging interface, resulting in a DLL, API to provide users, improve reliability and simplicity