Dart

Office365 POP3 Login with OAuth2 Authentication

See more Office365 Examples

Demonstrates how to authenticate using OAuth2 using the POP3 protocol with outlook.office365.com.

Note: This example requires Chilkat v9.5.0.83 or greater.

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final mailman = CkMailMan();

  mailman.mailHost = 'outlook.office365.com';
  mailman.mailPort = 995;
  mailman.popSsl = true;

  // Use your O365 email address here.
  mailman.popUsername = 'OFFICE365_EMAIL_ADDRESS';

  // When using OAuth2 authentication, leave the password empty.
  mailman.popPassword = '';

  // Load our previously obtained OAuth2 access token.
  final jsonToken = CkJsonObject();
  try {
    jsonToken.loadFile('qa_data/tokens/office365.json');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  mailman.oAuth2AccessToken = jsonToken.stringOf('access_token');

  // Make the TLS connection to the outlook.office365.com POP3 server.
  try {
    mailman.pop3Connect();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Authenticate using XOAUTH2
  try {
    mailman.pop3Authenticate();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Find out how many emails are on the server..
  final numEmails = mailman.checkMail();
  if (numEmails < 0) {
    print(mailman.lastErrorText);
    return;
  }

  // Examine the POP3 session log:
  print(mailman.pop3SessionLog);

  // The POP3 session log will look something like this:

  // **** Connected to outlook.office365.com:995
  // < +OK The Microsoft Exchange POP3 service is ready. [QwBIADIAUABSADEAOABD...YwBvAG0A]
  // > AUTH XOAUTH2
  // < + 
  // > <base64 string in XOAUTH2 format>
  // < +OK User successfully authenticated.
  // > STAT
  // < +OK 3 375302

  // End the POP3 session and close the connection to the GMail server.
  try {
    mailman.pop3EndSession();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Finished.');
}