(Android™) SMTP GMail Send using App Password

See more GMail SMTP/IMAP/POP Examples

Demonstrates how to authenticate using an app password with GMail for SMTP (port 465 using implicit SSL/TLS).

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

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

    // Starting May 30, 2022, Google will no longer support the use of third-party apps or devices 
    // which ask you to sign in to your Google Account using only your username and password.

    // Instead of authenticating with your GMail username/password, a GMail user can create an App Password
    // and then login using their username/app_password.   It's literally the same, except it allows a GMail
    // account owner to isolate passwords to specific applications.

    // The Gmail account owner would first need to make sure she has 2-Step Verification setup for her account.
    // Note: The 2FA verification is not a factor when authenticating with an app password. The 2FA is required
    // to setup app passwords in the Google account console.  See Sign in with App Passwords

    // After the GMail account owner has setup his app password, he simply uses the app password instead of his GMail account password.

    CkMailMan mailman = new CkMailMan();

    mailman.put_SmtpHost("smtp.gmail.com");

    mailman.put_SmtpUsername("user@gmail.com");
    mailman.put_SmtpPassword("srnyyvqajocnsvdp");

    mailman.put_SmtpSsl(true);
    mailman.put_SmtpPort(465);

    boolean success = mailman.SmtpConnect();
    if (success == false) {
        Log.i(TAG, mailman.lastErrorText());
        return;
        }

    success = mailman.SmtpAuthenticate();
    if (success == false) {
        Log.i(TAG, mailman.lastErrorText());
        return;
        }

    Log.i(TAG, "SMTP Success!");

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}