diff --git a/UTILS/PutOrders/puo_sendmail.js b/UTILS/PutOrders/puo_sendmail.js
index e86596ad6c..79caed13b9 100644
--- a/UTILS/PutOrders/puo_sendmail.js
+++ b/UTILS/PutOrders/puo_sendmail.js
@@ -271,6 +271,10 @@ v_aanduiding = "sendMail 2k";
                         var http_request = doHTTP(url, { method: "GET", headers: { "accept": "application/json" }});
 
                         var props = eval('(' + http_request.responseText + ')');
+                        if ("message" in props)
+                        {
+                            Log2File(1, props.message); // bijvoorbeeld "Invalid APIKEY"
+                        }
                     }
                     if (props.flexlog)
                         Log2File(1, props.flexlog);