nodemailer 发邮件

var transporter = nodemailer.createTransport({//v1.0 above do not use 'SMTP' as first param
            host: "smtp.xxx.xxx.com",
            port: 25,
            name:"xx.xx.com",
            tls: {
                rejectUnauthorized:false,
            },
            auth: {
                user: user,
                pass: password
            }
        });

        // setup e-mail data with unicode symbols
        var mailOptions = {
            date: new Date(),
            from: 'noreply@xxx.xxx.com', // sender address
            to: 'xxx@xxx.com, xxx@qq.com,', // list of receivers
            subject: title, // Subject line
            text:content,
            html: '<div>'+content.replace(/[\r\n]+/g,'<br />')+'</div>' // html body
        };

        var msg = yield function(fn){
            // send mail with defined transport object
            transporter.sendMail(mailOptions, function(error, info){
                var msg='';
                if(error){
                    msg = 'sendMail fail>>>'+error;
                }

                msg = 'Message sent: ' + (info&&info.response);
                transporter.close();
                fn(error,msg);
            });
        }

　　KOA 项目内，使用 co 框架扁平化回调函数

文档：

http://nodemailer.com/2-0-0-beta/setup-smtp/