I don't think I'm following the 2nd half of your post, but a simple example of sending an email in Craft 2 looks like this:
$emailModel = new EmailModel();
$emailModel->subject = 'My Subject';
$emailModel->body = 'My Body';
$emailModel->htmlBody = '<html><body>My HTML Body</body></html>';
$emailModel->toEmail = '[email protected]';
craft()->email->sendEmail($emailModel);