diff --git a/appveyor.yml b/appveyor.yml
index 9bed12474cd128b45d273aff4db0f96d53f62782..5971337cdbdc3daf629ccafe3c7818155a07e77a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -53,6 +53,9 @@ notifications:
   - provider: Email
     to:
       - harfbuzz-bots-chatter@googlegroups.com
+    on_build_success: false
+    on_build_failure: true
+    on_build_status_changed: true
 
 # disable automatic tests
 test: off