diff --git a/tools/coco/client.py b/tools/coco/client.py
index 803b425..5fe0619 100644
--- a/tools/coco/client.py
+++ b/tools/coco/client.py
@@ -107,13 +107,27 @@ class CocoClient:
             self.histories[self.current_interlocutor].append((self.nick, msg))
             out_msg = Message("💬 %s: %s" % (self.nick, msg))
 
+            out = [out_msg]
             if output:
-                return [out_msg] + self.__process_and_format_received_msg(output)
-            else:
-                return [out_msg]
+                out += self.__process_and_format_received_msg(output)
+            return out
         else:
             return [BotMessage("Il faut sélectionner une conversation d'abord pd")]
 
+    def broadcast_msg(self, msg: str) -> List[AbstractResponse]:
+        if self.interlocutors:
+            outputs = [Message("💬 %s à tous: %s" % (self.nick, msg))]
+            for interlocutor in self.interlocutors:
+                sendmsg_req = SendMsgRequest(self.user_id, self.user_pass, interlocutor.id, msg)
+                output = sendmsg_req.retrieve()
+                self.histories[interlocutor].append((self.nick, msg))
+                if output:
+                    outputs += self.__process_and_format_received_msg(output)
+            return outputs
+        else:
+            return [BotMessage("Aucune conversation active")]
+
+
     def switch_conv(self, nick: str=None) -> Union[List[BotMessage], BotMessage]:
         if not self.interlocutors:
             return BotMessage("Pas de conversations en cours")
diff --git a/tools/processors/messages.py b/tools/processors/messages.py
index 224be5b..346ab24 100755
--- a/tools/processors/messages.py
+++ b/tools/processors/messages.py
@@ -69,7 +69,11 @@ class CocoConnectCommand(BaseCocobotCommand):
         if len(zip_code) != 5 or not zip_code.isnumeric():
             return Message("Le code postal c'est 5 chiffres, pd")
 
-        self.cococlient.connect(nick, int(age), True, zip_code)
+        try:
+            self.cococlient.connect(nick, int(age), True, zip_code)
+        except ValueError:
+            return Message("Le code postal a pas l'air d'être bon")
+
         if self.cococlient.is_connected:
             return BotMessage("Connecté en tant que %s, de %s ans" % (nick, age))
         else:
@@ -85,6 +89,15 @@ class CocoMsgCommand(BaseCocobotCommand):
         return self.cococlient.send_msg(text)
 
 
+class CocoBroadcastCommand(BaseCocobotCommand):
+    HELP_STR = "/cocoall message"
+    _cmd_suffix = "all"
+
+    def process(self, text : str, sender_id : str, users_list : UserList):
+        text = text[len(self._cmd_suffix):].strip()
+        return self.cococlient.broadcast_msg(text)
+
+
 class CocoSwitchCommand(BaseCocobotCommand):
     HELP_STR = "/cocoswitch [pseudo de l'interlocuteur]"
     _cmd_suffix = "switch"