ldc-com-app-bo/app/Mail/SendFlyer.php

<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class SendFlyer extends Mailable implements ShouldQueue
{
    use Queueable;
    use SerializesModels;

    /** @var object */
    public $data;

    /**
     * Create a new message instance.
     *
     * @param mixed $data
     * @return void
     */
    public function __construct(mixed $data)
    {
        $this->data = (object) $data;
    }

    /**
     * Build the message.
     *
     * @return mixed
     */
    public function build(): mixed
    {
        return $this
            ->from(config('mail.from.address'), $this->data->fromName)
            ->subject($this->data->subject)
            ->markdown('bo.mails.sendflyer');
    }
}