portal-api/app/Mail/Customer/ManualCustomerEmail.php

<?php

namespace App\Mail\Customer;

use App\Models\Template;
use App\Support\EmailTemplateShell;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Mail\Mailable;
use Illuminate\Mail\Mailables\Content;
use Illuminate\Mail\Mailables\Envelope;
use Illuminate\Queue\SerializesModels;

class ManualCustomerEmail extends Mailable implements ShouldQueue
{
    use Queueable, SerializesModels;

    public function __construct(
        private readonly string $emailSubject,
        private readonly string $htmlContent,
        private readonly bool $wrapLayout = true,
    ) {}

    public function envelope(): Envelope
    {
        return new Envelope(subject: $this->emailSubject);
    }

    public function content(): Content
    {
        return new Content(
            htmlString: $this->wrapLayout
                ? Template::renderWithLayout($this->emailSubject, $this->htmlContent)
                : EmailTemplateShell::document($this->emailSubject, $this->htmlContent),
        );
    }

    public function attachments(): array
    {
        return [];
    }
}