一组实现邮件发送功能的C++封装类

程序包括如下功能：



- 支持验证功能，为可选项

- 支持包括html文本、普通文本在内的混排方式

- 支持按特定优先级发送邮件

- 支持一次发送多个附件，为可选项

- 支持多收件人发送，对于某封邮件，可以选择一次只向一个人发送，也可以选择发送给所有人

-The achievement of a group of e-mail function of type C++ package includes the following features:- support of authentication function is optional- to support the text, including html, plain text, including mixed mode- support for specific priority to send mail- in support of a send multiple attachments, optional- support multi-recipient to send for a message, you can choose one only one person to send, you can choose to send to all