diff --git a/htdocs/comm/mailing/fiche.php b/htdocs/comm/mailing/fiche.php
index a8064da19f3..0443dfb4620 100644
--- a/htdocs/comm/mailing/fiche.php
+++ b/htdocs/comm/mailing/fiche.php
@@ -34,7 +34,7 @@ require_once(DOL_DOCUMENT_ROOT."/core/class/extrafields.class.php");
 
 $langs->load("mails");
 
-if (! $user->rights->mailing->lire || $user->societe_id > 0) accessforbidden();
+if (! $user->rights->mailing->lire || (empty($conf->global->EXTERNAL_USERS_ARE_AUTHORIZED) && $user->societe_id > 0)) accessforbidden();
 
 $id=(GETPOST('mailid','int') ? GETPOST('mailid','int') : GETPOST('id','int'));
 $action=GETPOST('action','alpha');