JS SMTP 服务器需要安全连接或客户端未通过身份验证

Question

我从 SmptJs 复制了代码

btn.addEventListener('click',() => {
    Email.send({
        Host: 'smtp.gmail.com',
        Username:'..@gmail.com',
        Password:'a',
        To:'..@gmail.com',
        Subject:"matter?",
        From: '..@gmail.com',
        Body:'What?'
    }).then(msg=>console.log(msg))
 })

我收到以下错误：

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Authentication Required. Learn more at - Fix: Try a different SMTP server 

但是，在我的 Google 个人资料中打开了安全性较低的应用访问。这里可能有什么问题？