actually send multiple emails instead of a single one

monkeysign/ui.py

@@ -652,7 +652,8 @@ Sign all identities? [y/N] \
 
         if len(self.signed_keys) < 1:
             logger.warning(_('no key signed, nothing to export'))
-        
+
+        ret = True
         for fpr, key in self.signed_keys.items():
             if self.chosen_uid is None:
                 for uid in key.uids.values():
@@ -661,14 +662,15 @@ Sign all identities? [y/N] \
                     except GpgRuntimeError as e:
                         logger.warning(_('failed to create email: %s'), e)
                         break
-                    return self.sendmail(msg)
+                    ret = ret and self.sendmail(msg)
             else:
                 try:
                     msg = EmailFactory(self.tmpkeyring.export_data(fpr), fpr, self.chosen_uid, from_user, self.options.to)
                 except GpgRuntimeError as e:
                     logger.warning(_('failed to create email: %s'), e)
                     break
-                return self.sendmail(msg)
+                ret = self.sendmail(msg)
+        return ret
 
     def sendmail(self, msg):
             """actually send the email