Implementing nodemailer email based on Node.js_node.js

Nodemailer is a simple and easy-to-use Node.js email sending component. The specific operations are as follows

1. Install nodemailer

npm install nodemailer --save

2. Features

The main features of Nodemailer include:

• Support Unicode encoding
• Support Window system environment
• Supports HTML content and normal text content
• Support attachments (transfer large attachments)
• Supports embedding images in HTML content
• Supports SSL/STARTTLS secure email sending
• Supports built-in transport methods and transport methods implemented by other plug-ins
• Support custom plug-ins to process messages
• Support XOAUTH2 login verification
  

The above functional features have covered most of the needs for sending emails. Next, let us start writing the program.

3. Simple example

This is a complete example to send email with clear text and HTML body

var nodemailer = require('nodemailer');

// create reusable transporter object using the default SMTP transport
var transporter = nodemailer.createTransport('smtps://user%40gmail.com:pass@smtp.gmail.com');

// setup e-mail data with unicode symbols
var mailOptions = {
  from: 'Fred Foo &#128101; <foo@blurdybloop.com>', // sender address
  to: 'bar@blurdybloop.com, baz@blurdybloop.com', // list of receivers
  subject: 'Hello &#10004;', // Subject line
  text: 'Hello world &#128052;', // plaintext body
  html: '<b>Hello world &#128052;</b>' // html body
};

// send mail with defined transport object
transporter.sendMail(mailOptions, function(error, info){
  if(error){
    return console.log(error);
  }
  console.log('Message sent: ' + info.response);
});

4. Common mistakes

{ [AuthError: Invalid login - 454 Authentication failed, please open smtp flag first!]
 name: 'AuthError',
 data: '454 Authentication failed, please open smtp flag first!',
 stage: 'auth' }

Cause of error: The account has not set up this service
Solution: QQ mailbox -> Settings -> Account -> Enable service: POP3/SMTP service

{ [SenderError: Mail from command failed - 501 mail from address must be same as authorization user]
 name: 'SenderError',
 data: '501 mail from address must be same as authorization user',
 stage: 'mail' }

Cause of error: The sending account and the authentication account are different, that is, the username and password do not match.

The above is the entire content of this article, I hope it will be helpful to everyone’s study.