Send the message. If message is an iterable, then send 
        all the messages.

def send(self, msg):
        '''Send the message. If message is an iterable, then send 
        all the messages.'''
        app = self.app or current_app
        mailer = app.extensions['marrowmailer']
        mailer.start()
        if not hasattr(msg, '__iter__'):
            result = mailer.send(msg)
        else:
            result = map(lambda message: mailer.send(message), msg)
        mailer.stop()
        return result