send email if authors exist
diff --git a/vars/jenkinsNotify.groovy b/vars/jenkinsNotify.groovy
index 97e71d1..c3661b4 100644
--- a/vars/jenkinsNotify.groovy
+++ b/vars/jenkinsNotify.groovy
@@ -105,6 +105,7 @@
     for (def author in authors) {
         sendMail &= !author.matches('(.*)github(.*)')
     }
+    sendMail &= !authors.isEmpty()
     if (sendMail) {
         messageBody = messageBody + '\n${FAILED_TESTS}\n' + messageTail
         println("Sending email ...")