<?php

use Silex\Application;
use Daruwanov\Provider\MandrillMessagesServiceProvider;

$app = new Application();
$app->register(new MandrillMessagesServiceProvider(), array(
            "mandrill" => array(
                'password'=>$password
              )
));

$m = $app['mandrill.messages'];
$m->sendTemplate($templatename, $templatedata, $messageData);