ldc-dam/app/Mail/ContactMail.php

<?php

namespace App\Mail;

use App\Enums\ContactType;
use App\Models\User;
use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class ContactMail extends Mailable
{
    use Queueable;
    use SerializesModels;

    /** @var \App\Enums\ContactType */
    public $type;

    /** @var string */
    public $url;

    /** @var string */
    public $messagetxt;

    /** @var \App\Models\User */
    public $user;

    /**
     * Create a new message instance.
     *
     * @param \App\Enums\ContactType $type
     * @param string                 $url
     * @param string                 $message
     * @param \App\Models\User       $user
     */
    public function __construct(ContactType $type, string $url, string $message, User $user)
    {
        $this->type       = $type;
        $this->url        = $url;
        $this->messagetxt = $message;
        $this->user       = $user;
    }

    /**
     * Build the message.
     *
     * @return $this
     */
    public function build()
    {
        return $this->from('dam@ldc.fr', 'DAM')
            ->subject('Message d\'un utilisateur')
            ->view('mails.contact');
    }
}