ldc-crm/app/Mail/CourrierArcadiaError.php

<?php

namespace App\Mail;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class CourrierArcadiaError extends Mailable implements ShouldQueue
{
    use Queueable;
    use SerializesModels;

    public $subject;

    public $msg;

    public $xml;

    /**
     * Create a new message instance.
     *
     * @return void
     */
    public function __construct($subject, $msg, $xml)
    {
        $this->subject = $subject;
        $this->msg     = $msg;
        $this->xml     = $xml;
    }

    /**
     * Build the message.
     *
     * @return $this
     */
    public function build()
    {
        $msg = $this->msg;
        return $this->subject(
            sprintf(
                "[LDC CRM] %s",
                $this->subject
            )
        )->view(
            'mail.arcadia-error',
            compact('msg')
        )->attachData(
            $this->xml,
            date("Ymd_His") . '.xml',
            ['mime' => 'application/xml']
        );
    }
}