Android: How to send email from android application

Create a Linear xml layout as below,

In Android, we can use Intent.ACTION_SEND to call an existing email client to send an email.
Below shows the complete code for sending an email.
package com.example.sampletestapp;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

public class SendMail extends Activity {

    EditText edtTo, edtSub, edtMsgs;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sendemail);
        initializeVars();
    }
    private void initializeVars() {

        edtTo = (EditText) findViewById(R.id.edtTo);
        edtSub = (EditText) findViewById(R.id.edtSubj);
        edtMsgs = (EditText) findViewById(R.id.edtMsg);
    }
     //emailSend() set to onClick() of Send Mail button in xml layout
    public void emailSend(View v) {
        String message = edtMsgs.getText().toString();
        String to=edtTo.getText().toString();
        String subj=edtSub.getText().toString();

        Intent emailIntent=new Intent(android.content.Intent.ACTION_SEND);
        emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, to);
        emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, subj);
        emailIntent.setType("plain/text");
        emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, message);
        startActivity(emailIntent);       
    }
}
Run the application and fill in all the fields and click Send Mail button.

The screen will be displayed as,

Check the email and message will be received successfully.