Config email : testemail route + remove spool memory

config/packages/swiftmailer.yaml

 swiftmailer:
-    url: '%env(MAILER_URL)%'
-    spool: { type: 'memory' }
+    url: '%env(MAILER_URL)%'
\ No newline at end of file

src/Controller/MailerController.php

+<?php
+
+namespace App\Controller;
+
+use App\Entity\Adherent;
+use App\Entity\GlobalParameter;
+use App\Entity\Payment;
+use App\Form\Type\AdhererFormType;
+use App\Utils\CustomEntityManager;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Annotation\Route;
+use Symfony\Component\Serializer\Normalizer\AbstractNormalizer;
+
+class MailerController extends AbstractController
+{
+    private $em;
+    private $mailer;
+
+    public function __construct(CustomEntityManager $em, \Swift_Mailer $mailer)
+    {
+        $this->em = $em;
+        $this->mailer = $mailer;
+    }
+
+    /**
+     * @Route("/testmail",name="testmail")
+     */
+    public function sendEmail()
+    {
+
+        $email = (new \Swift_Message('Message de test Kohinos'))
+                    ->setFrom($this->em->getRepository(GlobalParameter::class)->val(GlobalParameter::MLC_NOTIF_EMAIL))
+                    ->setTo('julien.jorry@gmail.com')
+                    ->setCharset('utf-8')
+                    ->setBody('Hello from symfony!');
+
+        $sentEmail = $this->mailer->send($email);
+        dump($sentEmail);
+
+        return $this->redirectToRoute('index');
+    }
+}