一、代表发送
1、需实现如图所示的功能：
答复时直接答复被代表者
2、参考资料
https://stackoverflow.com/questions/44402582/send-email-using-on-behalf-of-using-apache-common-email
https://stackoverflow.com/questions/27343725/com-sun-mail-smtp-smtpsenderfailedexception-550-5-7-1-client-does-not-have-perm
标签：代表,questions,email,发送,https,stackoverflow,com,Email From： https://www.cnblogs.com/hotchner-zhang/p/17550300.html