diff --git a/src/Utils.cpp b/src/Utils.cpp
index 0f9f14fad718..de1389b5696d 100644
--- a/src/Utils.cpp
+++ b/src/Utils.cpp
@@ -2071,10 +2071,10 @@ bool Utils::sendMail(lua_State *vm, char *from, char *to, char *cc,
     ret_str = curl_easy_strerror(res);
 
     if (res != CURLE_OK) {
-      ntop->getTrace()->traceEvent(TRACE_WARNING,
-                                   "Unable to send email to (%s): %s. Run "
-                                   "ntopng with -v6 for more details.",
+      ntop->getTrace()->traceEvent(TRACE_WARNING, "Unable to send email to (%s): %s",
                                    smtp_server, curl_easy_strerror(res));
+      if (ntop->getTrace()->get_trace_level() < TRACE_LEVEL_DEBUG && !verbose)
+        ntop->getTrace()->traceEvent(TRACE_WARNING, "Run ntopng with -v6 for more details");
       ret = false;
     }
 
@@ -2100,15 +2100,17 @@ bool Utils::sendMail(lua_State *vm, char *from, char *to, char *cc,
     lua_newtable(vm);
     lua_push_bool_table_entry(vm, "success", ret);
     lua_push_str_table_entry(vm, "msg", ret_str);
-  } else if (!ret)
+  } else if (!ret) {
     /*
       If not lua VM has been passed, in case of error, a message is logged to
       stdout
      */
-    ntop->getTrace()->traceEvent(TRACE_WARNING,
-                                 "Unable to send email to (%s): %s. Run ntopng "
-                                 "with -v6 for more details.",
+    ntop->getTrace()->traceEvent(TRACE_WARNING, "Unable to send email to (%s): %s",
                                  smtp_server, ret_str);
+    if (ntop->getTrace()->get_trace_level() < TRACE_LEVEL_DEBUG && !verbose)
+      ntop->getTrace()->traceEvent(TRACE_WARNING, "Run ntopng with -v6 for more details");
+  }
+
   return ret;
 }