tystr_sendgrid:
username: username
password: password

$message = Swift_Message::newInstance()
        ->setSubject('Periodic Report')
        ->setFrom('abc@gmail.com')
        ->setTo($userEmail)
        ->setBody(
        $this->getContainer()->get('templating')->render(
                'aaaaa:layouts:mailReportSend.txt.twig',
array('data'=> $data)
        )
);
$sendgrid = $this->getContainer()->get('tystr_sendgrid.sendgrid');
$sendgrid->send($message);