Dart

SMTP XOAUTH2 Authentication

See more SMTP Examples

Demonstrates how to authenticate using an OAuth2 access token. This example assumes you have already obtained the access token and now wish to use it in an SMTP session. 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 oauth2AccessToken = 'some_previously_obtained_token';

  final mailman = CkMailMan();

  // Set the properties for the SMTP server, whatever they may be..
  mailman.smtpHost = 'smtp.example.com';
  mailman.smtpPort = 587;
  mailman.startTLS = true;

  mailman.smtpUsername = 'myLogin';
  mailman.oAuth2AccessToken = oauth2AccessToken;

  // Create a new email object
  final email = CkEmail();

  email.subject = 'This is a test';
  email.body = 'This is a test';
  email.from = 'Joe Example <joe@example.com>';
  email.addTo('Chilkat Admin', 'admin@chilkatsoft.com');

  // Connect to the server indicated by the SmtpHost property
  try {
    mailman.smtpConnect();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Authenticate using XOAUTH2 (using the OAuth2AccessToken)
  try {
    mailman.smtpAuthenticate();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  try {
    mailman.sendEmail(email);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Email sent.');

  mailman.closeSmtpConnection();
}