code: public function perform(array $args = []): int
      {
          // Create a transport
          $transport = new Swift_SmtpTransport(
              $args['smtp']['host'],
              $args['smtp']['port']
          );
          $transport->setUsername($args['smtp']['username']);
          $transport->setPassword($args['smtp']['password']);
        
          // Create a message
          $mailer = new Swift_Mailer($transport);
          $message = (new Swift_Message($args['subject']))
              ->setFrom([$args['from']['email'] => $args['from']['email']])
              ->setTo([$args['to']['email'] => $args['to']['name']])
              ->setBody($args['message']);
          
          // Send the message
          $result = $mailer->send($message);
  
          // The email was successfully sent if $mail->send returns 1, indicating 1 email was sent
          return $result === 1;
      }
docs: Sends a single email
  
  `$args` is an array of details pushed into Redis. In this example `$args` has the following
  structure
  @param array $args = [
  'smtp' => [
  'host' => '127.0.0.1',
  'port' => 25
  'username' => 'smtp_username',
  'password' => 'smtp_password'
  ],
  'subject' => 'Hello Doctor!',
  'message' => 'What are you doing for Christmas?',
  'from' => [
  'email' => 'clara.oswald@tardis.io',
  'name' => 'Clara Oswald
  ],
  'to' => [
  'email' => 'doctor@tardis.io',
  'name' => 'Doctor'
  ]
  ];
  @return int