如何使用NodeMailer (而不是SMTP)和Promise (蓝鸟)发送邮件？

npm install nodemailer bluebird

const nodemailer = require('nodemailer');
const Promise = require('bluebird');

const transporter = nodemailer.createTransport({
  host: 'smtp.example.com',
  port: 587,
  secure: false, // true for 465, false for other ports
  auth: {
    user: 'your-email@example.com',
    pass: 'your-password'
  }
});

const mailOptions = {
  from: 'your-email@example.com',
  to: 'recipient@example.com',
  subject: 'Hello from NodeMailer',
  text: 'This is a test email sent using NodeMailer and Promise (bluebird).'
};

Promise.promisifyAll(transporter);

transporter.sendMailAsync(mailOptions)
  .then(() => {
    console.log('Email sent successfully');
  })
  .catch((error) => {
    console.error('Error sending email:', error);
  });