diff --git a/src/ninegate-1.0/src/Cadoles/CoreBundle/Controller/MailController.php b/src/ninegate-1.0/src/Cadoles/CoreBundle/Controller/MailController.php
index 226e7614..d472bb2e 100755
--- a/src/ninegate-1.0/src/Cadoles/CoreBundle/Controller/MailController.php
+++ b/src/ninegate-1.0/src/Cadoles/CoreBundle/Controller/MailController.php
@@ -50,7 +50,22 @@ class MailController extends Controller
             
 
             $destinataires=$form->get("destinataire")->getData();
-            $to=explode(";",$destinataires); 
+            $to=explode(";",$destinataires);
+            
+            // On s'assure que les destinataires ne sont pas déjà inscrit dans le portail
+            $usersnotin=[];
+            $usersin=[];
+            foreach($to as $key => $mail) {
+                // Si le mail existe on l'enlève de la liste des utilisateurs à inviter
+                $user=$em->getRepository("CadolesCoreBundle:User")->findOneBy(["email"=>$mail]);
+                if($user) {
+                    unset($to[$key]);
+                    $usergroup=$em->getRepository("CadolesCoreBundle:UserGroup")->findOneBy(["user"=>$user,"group"=>$group]);
+                    if($usergroup) array_push($usersin,$user);
+                    else array_push($usersnotin,$user);
+                }
+            }
+            
             $text=$form->get("message")->getData();
             $subject=$form->get("subject")->getData();
             $template="template";
@@ -65,15 +80,27 @@ class MailController extends Controller
             $message->sendEmail($template, $mail_params, $to, $from, $fromName);
         }
 
-      	return $this->render('CadolesCoreBundle:Mail:mail.html.twig',[
-            'useheader'     => false,
-            'usemenu'       => false,
-            'usesidebar'    => false,
-            'closed'        => $closed,
-            'subject'       => $subject,
-            'message'       => $message,
-            'form'          => $form->createView()
-        ]);
+        if($closed && (!empty($usersin)||!empty($usersnotin))) {
+            return $this->render('CadolesCoreBundle:Mail:users.html.twig',[
+                'useheader'     => false,
+                'usemenu'       => false,
+                'usesidebar'    => false,
+                'usersin'       => $usersin,
+                'usersnotin'    => $usersnotin,
+                'group'         => $group
+            ]);           
+        }
+        else {
+            return $this->render('CadolesCoreBundle:Mail:mail.html.twig',[
+                'useheader'     => false,
+                'usemenu'       => false,
+                'usesidebar'    => false,
+                'closed'        => $closed,
+                'subject'       => $subject,
+                'message'       => $message,
+                'form'          => $form->createView()
+            ]);
+        }
     }
 
 }
diff --git a/src/ninegate-1.0/src/Cadoles/CoreBundle/Resources/views/Mail/users.html.twig b/src/ninegate-1.0/src/Cadoles/CoreBundle/Resources/views/Mail/users.html.twig
new file mode 100644
index 00000000..a631bbc6
--- /dev/null
+++ b/src/ninegate-1.0/src/Cadoles/CoreBundle/Resources/views/Mail/users.html.twig
@@ -0,0 +1,93 @@
+{% extends '@CadolesCore/base.html.twig' %}
+
+{% block pagewrapper %}
+    <a class="btn btn-default" onClick="closeModal()">Fermer</a>
+
+    <br><br>
+
+    {% if not usersnotin is empty %}
+        <h3>Les utilisateurs suivants existent déjà dans {{ app.session.get('appname') }}</h3>
+        Vous pouvez les ajouter dès maintenant à votre groupe<br>
+
+        <div class="dataTable_wrapper">
+            <table class="table table-striped table-bordered table-hover" id="dataTablesnotin" style="width:100%">
+                <thead>
+                <tr>
+                    <th width="70px" class="no-sort">Action</th>
+                    <th width="70px" class="no-sort">Avatar</th>
+                    <th width="200px">Login</th>
+                    <th>Email</th>  
+                </tr>
+                </thead>
+
+                <tbody>
+                    {% for user in usersnotin %}
+                        <tr id="user{{user.id}}">
+                            <td><a style='cursor:pointer' onClick='addUsers({{user.id}})'><i class='fa fa-plus fa-fw'></i></a></td>
+                            <td><img onClick='seeUser({{user.id}})' src='/{{alias}}/uploads/avatar/{{user.avatar}}' style='width:30px;background-color:#337ab7;margin:auto;display:block;cursor:pointer;'></td>
+                            <td>{{user.username}}</td>
+                            <td>{{user.email}}</td>
+                        </tr>
+                    {% endfor %}
+                </tbody>
+            </table>
+        </div>
+
+    {% endif %}
+
+    {% if not usersin is empty %}
+        <h3>Les utilisateurs suivants déjà rattachés à votre groupe</h3>
+        <div class="dataTable_wrapper">
+            <table class="table table-striped table-bordered table-hover" id="dataTablesin" style="width:100%">
+                <thead>
+                <tr>
+                    <th width="70px" class="no-sort">Avatar</th>
+                    <th width="200px">Login</th>
+                    <th>Email</th>  
+                </tr>
+                </thead>
+
+                <tbody>
+                    {% for user in usersin %}
+                        <tr>
+                            <td><img onClick='seeUser({{user.id}})' src='/{{alias}}/uploads/avatar/{{user.avatar}}' style='width:30px;background-color:#337ab7;margin:auto;display:block;cursor:pointer;'></td>
+                            <td>{{user.username}}</td>
+                            <td>{{user.email}}</td>
+                        </tr>
+                    {% endfor %}
+                </tbody>
+            </table>
+        </div>
+
+    {% endif %}
+
+{% endblock %}
+
+{% block localjavascript %}
+    $(document).ready(function() {
+    });
+
+    function addUsers(userid) {
+        $.ajax({
+            rowId: 2,
+            method: "POST",
+            url: "{{ path('cadoles_core_user_group_ajax_usergroup_add') }}",
+            data: "userid="+userid+"&groupid="+{{ group.id }},
+            success: function(data, dataType)
+            {
+                var row=$("#dataTablesnotin").DataTable().row("#user"+userid);
+                row.remove().draw(); 
+            },
+
+            error: function(XMLHttpRequest, textStatus, errorThrown)
+            {
+                
+            }
+        });         
+    }
+
+    function closeModal() {
+        window.parent.location.reload();
+    }
+
+{% endblock %}
\ No newline at end of file