--- create_classic_poll.php	2022-02-05 09:09:45.256310389 +0100
+++ create_classic_poll.php-new	2022-02-05 09:03:08.924297050 +0100
@@ -83,8 +83,12 @@
             $message_admin .= sprintf(' :<br/><br/><a href="%1$s">%1$s</a>', Utils::getUrlSondage($admin_poll_id, true));
 
             if ($mailService->isValidEmail($form->admin_mail)) {
-                $mailService->send($form->admin_mail, '[' . NOMAPPLICATION . '][' . __('Mail', 'Author\'s message') . '] ' . __('Generic', 'Poll') . ': ' . Utils::htmlEscape($form->title), $message_admin);
-                $mailService->send($form->admin_mail, '[' . NOMAPPLICATION . '][' . __('Mail', 'For sending to the polled users') . '] ' . __('Generic', 'Poll') . ': ' . Utils::htmlEscape($form->title), $message);
+                try {
+                    $mailService->send($form->admin_mail, '[' . NOMAPPLICATION . '][' . __('Mail', 'Author\'s message') . '] ' . __('Generic', 'Poll') . ': ' . Utils::htmlEscape($form->title), $message_admin);
+                    $mailService->send($form->admin_mail, '[' . NOMAPPLICATION . '][' . __('Mail', 'For sending to the polled users') . '] ' . __('Generic', 'Poll') . ': ' . Utils::htmlEscape($form->title), $message);
+                } catch (Exception $e) {
+                    $sessionService->set("Framadate", "messageBadEmail", TRUE);
+                }
             }
         }