flexisip-account-manager/flexiapi/app/Mail/ExpiringSpace.php

<?php

namespace App\Mail;

use App\Space;

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 ExpiringSpace extends Mailable
{
    use Queueable, SerializesModels;

    public function __construct(
        public Space $space
    ) {
    }

    public function envelope(): Envelope
    {
        return new Envelope(
            subject: $this->space->name . ': '. __('Space is expiring in :days days', ['days' => $this->space->daysLeft]),
        );
    }

    public function content(): Content
    {
        return new Content(
            markdown: 'mails.expiring_space',
        );
    }
}