app/console swiftmailer:email:send --subject="Test" --body="test" --from="xxxx" --to="yyyyy"

$mailer = $this->get('mailer');
                    $message = $mailer->createMessage()
                                      ->setSubject('Caderno Mágico: Redefinir Senha')
                                      ->setFrom(array($this->container->getParameter('server_mail_address') => 'Caderno Mágico'))
                                      ->setTo($usuario[0]->getEmail())
                                      ->setBody($this->renderView('Emails/recuperar_conta.html.twig', array('username' => $usuario_selecionado->getUsername(), 'dados'=>$hash)), 'text/html');

swiftmailer:
transport: smtp
host:      smtp.gmail.com
username:  yyyy
password:  ******
auth_mode: login
port:      465
encryption: ssl
spool: { type: memory }

swiftmailer.plugins.loggerplugin:
class: 'Swift_Plugins_LoggerPlugin'
arguments: ['@swiftmailer.plugins.loggerplugin.logger']
tags: [{ name: 'swiftmailer.default.plugin' }]

swiftmailer.plugins.loggerplugin.logger:
class: 'Swift_Plugins_Loggers_EchoLogger'
arguments: [false]

$mailer = $this->get('mailer');
                    $message = $mailer->createMessage()
                                      ->setSubject('Test')
                                      ->setFrom('yyyyy')
                                      ->setTo('xxxxx')
                                      ->setBody('test');