3dealer/app/Mail/ContactConfirmationMail.php

<?php

namespace App\Mail;

use Illuminate\Mail\Mailable;
use Illuminate\Mail\Mailables\Content;
use Illuminate\Mail\Mailables\Envelope;

/**
 * Sent to whoever submitted the contact form. Deliberately generic: it never
 * repeats what they wrote, so the form can't be used to deliver arbitrary text
 * to someone else's inbox.
 */
class ContactConfirmationMail extends Mailable
{
    public function envelope(): Envelope
    {
        return new Envelope(subject: __('storefront.contact.confirmation_subject'));
    }

    public function content(): Content
    {
        return new Content(view: 'emails.contact-confirmation');
    }
}