Email com java.io

import java.io.BufferedReader;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.Socket;

import java.net.UnknownHostException;

public static void main(String[] args) {
	Socket str = null;
	DataOutputStream strSaida = null;
	BufferedReader strEntrada = null;
	
	try{
		str = new Socket("smtp.gmail.com", 25);
		strSaida = new DataOutputStream(str.getOutputStream());
		strSaida.writeBytes("HELO gmail.com\n");
		strSaida.writeBytes("MAIL FROM: <[email removido]>\n");
		strSaida.writeBytes("RCPT TO: <[email removido]>\n");
		strSaida.writeBytes("DATA\n");
		strSaida.writeBytes("Subject: Mensagem de teste\n");
		strSaida.writeBytes("From: [email removido]\n");
		strSaida.writeBytes("To: [email removido]\n");
		strSaida.writeBytes("Esta mensagem foi enviada corretamente!!!:D\n");
		strSaida.writeBytes(".\n");
		strSaida.writeBytes("quit\n");
		str.close();
		strSaida.close();
	}catch(UnknownHostException e){
		System.out.println("host desconhecido");
	}catch(IOException e){
		System.out.println(e);
	}
	
}