Android send mail in background

To send an email in the background on Android, you can use the Intent class to start an Activity that sends the email. Here's an example:

Create a new Activity that sends the email:

public class SendEmailActivity extends AppCompatActivity {
 private static final String EMAIL_ADDRESS = "[email protected]";
 private static final String EMAIL_PASSWORD = "your_email_password";
 private static final String EMAIL_SUBJECT = "Test Email";
 private static final String EMAIL_BODY = "This is a test email";

 @Override
 protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_send_email);

     // Create a new Intent to send the email
     Intent intent = new Intent(Intent.ACTION_SEND);
     intent.setType("message/rfc822");
     intent.putExtra(Intent.EXTRA_EMAIL, new String[]{EMAIL_ADDRESS});
     intent.putExtra(Intent.EXTRA_SUBJECT, EMAIL_SUBJECT);
     intent.putExtra(Intent.EXTRA_TEXT, EMAIL_BODY);

     // Start the Activity to send the email
     startActivity(intent);
 }
}

To send the email in the background, you can use a Service that starts the Activity to send the email. Here's an example:

public class SendEmailService extends Service {
 @Override
 public IBinder onBind(Intent intent) {
     return null;
 }

 @Override
 public void onStartCommand(Intent intent, int flags, int startId) {
     // Start the Activity to send the email
     Intent emailIntent = new Intent(this, SendEmailActivity.class);
     startService(emailIntent);
     return super.onStartCommand(intent, flags, startId);
 }
}

To start the Service that sends the email, you can use a BroadcastReceiver that receives a broadcast intent and starts the Service. Here's an example:

public class SendEmailReceiver extends BroadcastReceiver {
 @Override
 public void onReceive(Context context, Intent intent) {
     // Start the Service to send the email
     Intent serviceIntent = new Intent(context, SendEmailService.class);
     context.startService(serviceIntent);
 }
}

To register the BroadcastReceiver to receive the broadcast intent, you can add the following code to your AndroidManifest.xml file:

<receiver android:name=".SendEmailReceiver">
 <intent-filter>
     <action android:name="com.example.SEND_EMAIL" />
 </intent-filter>
</receiver>

To send the email in the background, you can use the following code:
```
Intent intent = new Intent("com.example.SEND_EMAIL");
sendBroadcast(intent);
```
This will send the broadcast intent to the BroadcastReceiver, which will start the Service that sends the email.

Note that this is just an example, and you should modify the code to fit your specific needs. Additionally, you should be aware of the limitations and restrictions of sending emails on Android, such as the need to use a valid email account and the limitations on the number of emails that can be sent per day.

Mail Knowledge

Android send mail in background