setBaseUrl('../../../src/DebugBar/Resources'); use DebugBar\Bridge\SwiftMailer\SwiftLogCollector; use DebugBar\Bridge\SwiftMailer\SwiftMailCollector; $mailer = new Swift_Mailer(new Swift_NullTransport()); $debugbar['messages']->aggregate(new SwiftLogCollector($mailer)); $mailCollector = new SwiftMailCollector($mailer); $mailCollector->showMessageBody(); $debugbar->addCollector($mailCollector); $message = (new Swift_Message('Wonderful Subject')) ->setFrom(array('john@doe.com' => 'John Doe')) ->setTo(array('receiver@domain.org', 'other@domain.org' => 'A name')) ->setBody('

Here is the message itself

'); $mailer->send($message); render_demo_page();