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

namespace Illuminate\Mail;

use Illuminate\Contracts\View\Factory as ViewFactory;
use Illuminate\Support\HtmlString;
use Illuminate\Support\Str;
use League\CommonMark\CommonMarkConverter;
use League\CommonMark\Extension\Table\TableExtension;
use TijsVerkoyen\CssToInlineStyles\CssToInlineStyles;

class Markdown
{
    /**
     * The view factory implementation.
     *
     * @var \Illuminate\Contracts\View\Factory
     */
    protected $view;

    /**
     * The current theme being used when generating emails.
     *
     * @var string
     */
    protected $theme = 'default';

    /**
     * The registered component paths.
     *
     * @var array
     */
    protected $componentPaths = [];

    /**
     * Create a new Markdown renderer instance.
     *
     * @param  \Illuminate\Contracts\View\Factory  $view
     * @param  array  $options
     * @return void
     */
    public function __construct(ViewFactory $view, array $options = [])
    {
        $this-&gt;view = $view;
        $this-&gt;theme = $options['theme'] ?? 'default';
        $this-&gt;loadComponentsFrom($options['paths'] ?? []);
    }

    /**
     * Render the Markdown template into HTML.
     *
     * @param  string  $view
     * @param  array  $data
     * @param  \TijsVerkoyen\CssToInlineStyles\CssToInlineStyles|null  $inliner
     * @return \Illuminate\Support\HtmlString
     */
    public function render($view, array $data = [], $inliner = null)
    {
        $this-&gt;view-&gt;flushFinderCache();

        $contents = $this-&gt;view-&gt;replaceNamespace(
            'mail', $this-&gt;htmlComponentPaths()
        )-&gt;make($view, $data)-&gt;render();

        if ($this-&gt;view-&gt;exists($customTheme = Str::start($this-&gt;theme, 'mail.'))) {
            $theme = $customTheme;
        } else {
            $theme = Str::contains($this-&gt;theme, '::')
                ? $this-&gt;theme
                : 'mail::themes.'.$this-&gt;theme;
        }

        return new HtmlString(($inliner ?: new CssToInlineStyles)-&gt;convert(
            $contents, $this-&gt;view-&gt;make($theme, $data)-&gt;render()
        ));
    }

    /**
     * Render the Markdown template into text.
     *
     * @param  string  $view
     * @param  array  $data
     * @return \Illuminate\Support\HtmlString
     */
    public function renderText($view, array $data = [])
    {
        $this-&gt;view-&gt;flushFinderCache();

        $contents = $this-&gt;view-&gt;replaceNamespace(
            'mail', $this-&gt;textComponentPaths()
        )-&gt;make($view, $data)-&gt;render();

        return new HtmlString(
            html_entity_decode(preg_replace(&quot;/[\r\n]{2,}/&quot;, &quot;\n\n&quot;, $contents), ENT_QUOTES, 'UTF-8')
        );
    }

    /**
     * Parse the given Markdown text into HTML.
     *
     * @param  string  $text
     * @return \Illuminate\Support\HtmlString
     */
    public static function parse($text)
    {
        $converter = new CommonMarkConverter([
            'allow_unsafe_links' =&gt; false,
        ]);

        $converter-&gt;getEnvironment()-&gt;addExtension(new TableExtension());

        return new HtmlString((string) $converter-&gt;convertToHtml($text));
    }

    /**
     * Get the HTML component paths.
     *
     * @return array
     */
    public function htmlComponentPaths()
    {
        return array_map(function ($path) {
            return $path.'/html';
        }, $this-&gt;componentPaths());
    }

    /**
     * Get the text component paths.
     *
     * @return array
     */
    public function textComponentPaths()
    {
        return array_map(function ($path) {
            return $path.'/text';
        }, $this-&gt;componentPaths());
    }

    /**
     * Get the component paths.
     *
     * @return array
     */
    protected function componentPaths()
    {
        return array_unique(array_merge($this-&gt;componentPaths, [
            __DIR__.'/resources/views',
        ]));
    }

    /**
     * Register new mail component paths.
     *
     * @param  array  $paths
     * @return void
     */
    public function loadComponentsFrom(array $paths = [])
    {
        $this-&gt;componentPaths = $paths;
    }

    /**
     * Set the default theme to be used.
     *
     * @param  string  $theme
     * @return $this
     */
    public function theme($theme)
    {
        $this-&gt;theme = $theme;

        return $this;
    }

    /**
     * Get the theme currently being used by the renderer.
     *
     * @return string
     */
    public function getTheme()
    {
        return $this-&gt;theme;
    }
}
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