解决nodemailer发送email提示Invalid login 的问题

上代码

var nodemailer = require('nodemailer');

// create reusable transporter object using SMTP transport
var transporter = nodemailer.createTransport({
    service: 'Gmail',
    auth: {
        user: 'xxx@xxx',
        pass: 'xxxx'
    }
});

transporter.sendMail({
    from: 'xxx',
    to: 'xxxx',
    subject: 'hello',
    text: 'hello world!'
}, function(error, info){
    if(error){
        console.log(error);
    }else{
        console.log('Message sent: ' + info.response);
    }
});

错误提示
{ [Error: Invalid login]}

解决方法：
http://stackoverflow.com/questions/19877246/nodemailer-with-gmail-and-nodejs

http://stackoverflow.com/questions/19877246/nodemailer-with-gmail-and-nodejs
将这里的选项改成启用就可以发送email了