如何在NodeJS中将带有html页面的自动回复电子邮件作为电子邮件发送答案

【问题标题】：How to send an auto reply email with a html page as email in NodeJS如何在NodeJS中将带有html页面的自动回复电子邮件作为电子邮件发送
【发布时间】：2022-01-06 11:21:16
【问题描述】：

我最近开始使用 NodeJS 进行编程。我找不到任何方法如何发送自动回复电子邮件。当其他人向我发送电子邮件时，届时将向他/她的电子邮件发送自动回复电子邮件，该电子邮件为 HTML 电子邮件格式。

我该怎么做？

【问题讨论】：

标签： node.js html-email

【解决方案1】：

首先，您需要使用通用的smtp or imap client，例如https://www.npmjs.com/package/imap，或者更好的实际监控新电子邮件的模块，例如https://www.npmjs.com/package/mail-notifier，来轮询或监控您的帐户接收邮件

发布的例子是

Start listening new mails :

const notifier = require('mail-notifier');
 
const imap = {
  user: "yourimapuser",
  password: "yourimappassword",
  host: "imap.host.com",
  port: 993, // imap port
  tls: true,// use secure connection
  tlsOptions: { rejectUnauthorized: false }
};
 
notifier(imap)
  .on('mail', mail => console.log(mail))
  .start();
Keep it running forever :

const n = notifier(imap);
n.on('end', () => n.start()) // session closed
  .on('mail', mail => console.log(mail.from[0].address, mail.subject))
  .start();

接下来，很难击败nodemailer 来发送您的回复。

https://nodemailer.com/about/

这是他们的例子。（这段代码一半是cmets和logs）

"use strict";
const nodemailer = require("nodemailer");

// async..await is not allowed in global scope, must use a wrapper
async function main() {
  // Generate test SMTP service account from ethereal.email
  // Only needed if you don't have a real mail account for testing
  let testAccount = await nodemailer.createTestAccount();

  // create reusable transporter object using the default SMTP transport
  let transporter = nodemailer.createTransport({
    host: "smtp.ethereal.email",
    port: 587,
    secure: false, // true for 465, false for other ports
    auth: {
      user: testAccount.user, // generated ethereal user
      pass: testAccount.pass, // generated ethereal password
    },
  });

  // send mail with defined transport object
  let info = await transporter.sendMail({
    from: '"Fred Foo ?" <foo@example.com>', // sender address
    to: "bar@example.com, baz@example.com", // list of receivers
    subject: "Hello ✔", // Subject line
    text: "Hello world?", // plain text body
    html: "<b>Hello world?</b>", // html body
  });

  console.log("Message sent: %s", info.messageId);
  // Message sent: <b658f8ca-6296-ccf4-8306-87d57a0b4321@example.com>

  // Preview only available when sending through an Ethereal account
  console.log("Preview URL: %s", nodemailer.getTestMessageUrl(info));
  // Preview URL: https://ethereal.email/message/WaQKMgKddxQDoou...
}

main().catch(console.error);

【讨论】：