This Email-wrapper class for Kohana 3.0 doesn't have a proper documentation yet. When there is some spare time, I will write the guide. The code is "documentated" inside the class.
How to use:
$mail = Communicate::factory('postmark');
$mail->setup()
->addTo('myemail@website.com', 'Your name')
->addFrom('me@example.com')
->addMessage($htmlbody, $textbody)
->addSubject('testemail');
if($mail->send())
{
//success
}