<form method="POST">
    <h3>Editing: SendQueuedMailable.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

namespace Illuminate\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Mail\Factory as MailFactory;
use Illuminate\Contracts\Mail\Mailable as MailableContract;
use Illuminate\Contracts\Queue\ShouldBeEncrypted;

class SendQueuedMailable
{
    use Queueable;

    /**
     * The mailable message instance.
     *
     * @var \Illuminate\Contracts\Mail\Mailable
     */
    public $mailable;

    /**
     * The number of times the job may be attempted.
     *
     * @var int
     */
    public $tries;

    /**
     * The number of seconds the job can run before timing out.
     *
     * @var int
     */
    public $timeout;

    /**
     * Indicates if the job should be encrypted.
     *
     * @var bool
     */
    public $shouldBeEncrypted = false;

    /**
     * Create a new job instance.
     *
     * @param  \Illuminate\Contracts\Mail\Mailable  $mailable
     * @return void
     */
    public function __construct(MailableContract $mailable)
    {
        $this-&gt;mailable = $mailable;
        $this-&gt;tries = property_exists($mailable, 'tries') ? $mailable-&gt;tries : null;
        $this-&gt;timeout = property_exists($mailable, 'timeout') ? $mailable-&gt;timeout : null;
        $this-&gt;afterCommit = property_exists($mailable, 'afterCommit') ? $mailable-&gt;afterCommit : null;
        $this-&gt;shouldBeEncrypted = $mailable instanceof ShouldBeEncrypted;
    }

    /**
     * Handle the queued job.
     *
     * @param  \Illuminate\Contracts\Mail\Factory  $factory
     * @return void
     */
    public function handle(MailFactory $factory)
    {
        $this-&gt;mailable-&gt;send($factory);
    }

    /**
     * Get the display name for the queued job.
     *
     * @return string
     */
    public function displayName()
    {
        return get_class($this-&gt;mailable);
    }

    /**
     * Call the failed method on the mailable instance.
     *
     * @param  \Throwable  $e
     * @return void
     */
    public function failed($e)
    {
        if (method_exists($this-&gt;mailable, 'failed')) {
            $this-&gt;mailable-&gt;failed($e);
        }
    }

    /**
     * Get the number of seconds before a released mailable will be available.
     *
     * @return mixed
     */
    public function backoff()
    {
        if (! method_exists($this-&gt;mailable, 'backoff') &amp;&amp; ! isset($this-&gt;mailable-&gt;backoff)) {
            return;
        }

        return $this-&gt;mailable-&gt;backoff ?? $this-&gt;mailable-&gt;backoff();
    }

    /**
     * Prepare the instance for cloning.
     *
     * @return void
     */
    public function __clone()
    {
        $this-&gt;mailable = clone $this-&gt;mailable;
    }
}
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