Auth user from smtp server
more info: 使用SMTP服务进行用户登录认证
$ npm install smtp-auth --save
const SMTPAuth = require("smtp-auth");
const client = new SMTPAuth({
host: "smtp.163.com",
port: 25,
});
client.auth("test@extmail.org", "test").then(() => {
console.log("login success")
}).catch((err) => {
console.log("login fail: ", err)
});