(Node.js) Office365 IMAP with OAuth2 Authentication

See more Office365 Examples

Demonstrates how to authenticate using OAuth2 with outlook.office365.com.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    // An Office365 OAuth2 access token must first be obtained prior
    // to running this code.

    // Getting the OAuth2 access token for the 1st time requires the O365 account owner's 
    // interactive authorizaition via a web browser.  Afterwards, the access token
    // can be repeatedly refreshed automatically.

    // See the following examples for getting and refreshing an OAuth2 access token

    // Get Office365 SMTP/IMAP/POP3 OAuth2 Access Token
    // Refresh Office365 SMTP/IMAP/POP3 OAuth2 Access Token

    // First get our previously obtained OAuth2 access token.
    var jsonToken = new chilkat.JsonObject();
    var success = jsonToken.LoadFile("qa_data/tokens/office365.json");
    if (success == false) {
        console.log("Failed to open the office365 OAuth JSON file.");
        return;
    }

    var imap = new chilkat.Imap();

    imap.Ssl = true;
    imap.Port = 993;

    // Connect to the Office365 IMAP server.
    success = imap.Connect("outlook.office365.com");
    if (success !== true) {
        console.log(imap.LastErrorText);
        return;
    }

    // Use OAuth2 authentication.
    imap.AuthMethod = "XOAUTH2";

    // Login using our username (i.e. email address) and the access token for the password.
    success = imap.Login("OFFICE365_EMAIL_ADDRESS",jsonToken.StringOf("access_token"));
    if (success !== true) {
        console.log(imap.LastErrorText);
        return;
    }

    console.log("O365 OAuth authentication is successful.");

    // Do something...
    success = imap.SelectMailbox("Inbox");
    if (success !== true) {
        console.log(imap.LastErrorText);
        return;
    }

    // Your application can continue to do other things in the IMAP session....

    // When finished, logout and close the connection.
    success = imap.Logout();
    success = imap.Disconnect();

    console.log("Finished.");

}

chilkatExample();