几个月前发生这个问题。

I had this problem some months ago.

您必须允许安全性较低的应用才能访问您的Google帐户。

You have to allowing less secure apps to access your google account.

更改它 here

现在您的电子邮件必须正确发送;）

Now your email must be correctly sent ;)

更多信息： https://support.google.com/accounts/answer/6010255?hl=en