(Java) SMTP XOAUTH2 Authentication

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.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

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

    boolean success;
    String oauth2_access_token = "some_previously_obtained_token";

    CkMailMan mailman = new CkMailMan();

    // Set the properties for the SMTP server, whatever they may be..
    mailman.put_SmtpHost("smtp.example.com");
    mailman.put_SmtpPort(587);
    mailman.put_StartTLS(true);

    mailman.put_SmtpUsername("myLogin");
    mailman.put_OAuth2AccessToken(oauth2_access_token);

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

    email.put_Subject("This is a test");
    email.put_Body("This is a test");
    email.put_From("Joe Example <joe@example.com>");
    email.AddTo("Chilkat Admin","admin@chilkatsoft.com");

    // Connect to the server indicated by the SmtpHost property
    success = mailman.SmtpConnect();
    if (success != true) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    // Authenticate using XOAUTH2 (using the OAuth2AccessToken)
    success = mailman.SmtpAuthenticate();
    if (success != true) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    success = mailman.SendEmail(email);
    if (success != true) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    System.out.println("Email sent.");

    mailman.CloseSmtpConnection();
  }
}