{
    "name": "app-name",
    "description": "App description",
    "type": "project",
    "prefer-stable": true,
    "require": {
        "php": ">=5.3.0",
        "yiisoft/yii": "1.1.14",
        "janisto/yii-mailer": "1.0.0"
    }
}

// Composer autoload
$composerAutoload = dirname(__FILE__) . '/../vendor/autoload.php';
require_once($composerAutoload);
...

    'aliases'=>array(
        'vendor' => realpath(__DIR__ . '/../../vendor'),
    ),
    'components' => array(
        ...
        'mailer' => array(
            'class' => 'vendor.janisto.yii-mailer.SwiftMailerComponent',
            'type' => 'smtp',
            'host' => 'email-smtp.us-east-1.amazonaws.com',
            'port' => 587,
            'username' => 'xxx',
            'password' => 'yyy',
            'security' => 'tls',
            'throttle' => 5*60,
        ),
        ...
    ),

$message = Yii::app()->mailer
    ->createMessage('Your subject', 'Here is the message itself')
    ->setFrom(array('from@domain.com' => 'From Name'))
    ->setTo(array('to@domain.com' => 'To Name'));

Yii::app()->mailer->send($message);

$failures = array();
$sent = 0;
$from = array('from@domain.com' => 'From Name');
$emails = array(
    array('to@domain.com' => 'To Name'),
    array('receiver@bad-domain.org' => 'To Name'),
    array('other-receiver@bad-domain.org' => 'To Name'),
);

/* @var Swift_Message $message */
$message = Yii::app()->mailer
    ->createMessage('Your subject')
    ->setFrom($from)
    ->setBody('Here is the message itself')
    ->addPart('<q>Here is the message itself</q>', 'text/html');

foreach ($emails as $to) {
    $message->setTo($to);
    try {
        $sent += Yii::app()->mailer->send($message, $failures);
    } catch (Exception $e) {
        // SMTP server not responding or limit exceeded?
        echo $e->getMessage();
    }
}

echo "$sent emails sent.\n";
echo "Failures:\n";
print_r($failures);