diff --git a/metadata/service/server/single.yml b/metadata/service/server/single.yml
index 8da8a38..4811f70 100644
--- a/metadata/service/server/single.yml
+++ b/metadata/service/server/single.yml
@@ -8,3 +8,7 @@
       enabled: true
       bind:
         address: 0.0.0.0
+      mail:
+        host: localhost
+        from: gerrit
+        include_diff: true
\ No newline at end of file