FluxBB\Mail\MailServiceProvider::register PHP Method

    public function register()
    {
        $this->app->singleton('mailer', function () {
            $view = $this->app->make('Illuminate\\Contracts\\View\\Factory');
            $logger = $this->app->make('Psr\\Log\\LoggerInterface');
            $swift = new \Swift_Mailer(new LogTransport($logger));
            $events = $this->app->make('Illuminate\\Contracts\\Events\\Dispatcher');
            $mailer = new Mailer($view, $swift, $events);
            $mailer->setLogger($logger);
            return $mailer;
        });
        $this->app->alias('mailer', 'Illuminate\\Contracts\\Mail\\Mailer');
    }