学习flask-mail 利用Gmail出错的总结

利用flask Gmail发送邮件  一直出问题 因为账号密码都是对的

所以 到处搜索发现

然后在stack overflow 上面发现了一个回答 

Your code looks correct. Try logging in through your browser and if you are able to access your account come back and try your code again. Just make sure that you have typed your username and password correct

EDIT: Google blocks sign-in attempts from apps which do not use modern security standards (mentioned on their support page). You can however, turn on/off this safety feature by going to the link below:

Go to this link and select Turn On
https://www.google.com/settings/security/lesssecureapps

允许不够安全的应用

问题出现在了 这个Google的安全设置上面没有打开 

打开了之后就解决了