OrderReceived.php

<?php
namespace App\Mail;

use App\Mail\Traits\TextMailBuilder;
use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class OrderReceived extends Mailable
{
    use Queueable;
    use SerializesModels;
    use TextMailBuilder;
    
    // ...
}