gmail-sender-oauth

Send emails with Gmail API using an OAuth2 object

Installation

#install and save 
npm install gmail-sender-oauth --save

Usage

Require the module.

var gmailSender = require('gmail-sender-oauth');

Load Google Api Project client secret. To get this file follow Step 1 .

gmailSender.setClientSecretsFile('./client_secret.json');

Send Email (Requires Oauth2 authentication see below)

Send an email specifying all the headers (i.e 'from', 'to', 'subject', 'body').

var params = {
    from: '[e-mail]',
    to: '[e-mail]',
    subject: 'Win an iPhone 7 today!!!',
    body: 'This is a test'
};
gmailSender.send(accessToken, params, function (err, resp) {
  if (err) {
    return console.error('Something went wrong: ' + err);
  }
  else {
      console.log('Message sent with id: ' + resp.id);
  }
 
});

Authentication with Access Token

This assumes you already have an access token from Google Api. To get one, see test Generate Access Token and if you need to start from scratch, generate a Server Auth code first, see test Generate Server Auth code .

Terminal output

~/personal/gmail-sender-oauth/test$ node generate_server_auth.js 
Authorize this app by visiting this url: https://accounts.google.com/o/oauth2/auth?access_type=offline&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fgmail.compose&response_type=code&client_id=1081826302113-deknk5sgd6n2vutgv3l4ub4530qqc8kh.apps.googleusercontent.com&redirect_uri=urn%3Aietf%3Awg%3Aoauth%3A2.0%3Aoob
If you need a accessToken to be generated as well, run: 
node generate_access_token <SERVER_AUTH_CODE>, with the code you received from the visited URL.
 
~/personal/gmail-sender-oauth/test$ node generate_access_token.js 4/AR34xAC0Z437ItI_27FmpDYmCeNMpMWNyZk0G6cV6EQ
token: {"access_token":"ya29.Gls0BCt9gHK7Bmn5mPQFff6JCaVyt8ZcRiUgLPQL4SmAFk-msJOTIaISi-UiPhRD7QHR2n_8dJXymn08helwDCcnHpGK14sqHXhsH3fgTlvaNz1dZbA7P6LJO4BH","refresh_token":"1/kVLTLeR7vb1e6tuT6XHWBqZ0nG-qwldfeO1uhwdwBok","token_type":"Bearer","expiry_date":1492885695675}