SmtpClient cv = new SmtpClient("smtp.live.com", 25);
cv.EnableSsl = true;
cv.Credentials = new NetworkCredential("email@hotmail.com", "password");
try
{
    cv.Send("email@hotmail.com", "anotheremail@hotmail.com", "", "Hello");
    MessageBox.Show("Done");
}
catch(Exception w)
{
    MessageBox.Show("Not send" + w.InnerException);
}