Python smtplib,email

https://www.yiibai.com/python/python_sending_email.html

https://www.codenong.com/cs109856352/

https://www.cnblogs.com/zjutzz/p/4298961.html

https://blog.csdn.net/qq_20417499/article/details/80566265

https://www.cnblogs.com/lizhe860/p/9079234.html

https://blog.csdn.net/a1007720052/article/details/82690447

smtp

匿名邮件

email

MIME

email负责构造邮件，smtplib负责发送邮件

https://www.liaoxuefeng.com/wiki/897692888725344/923057144964288