diff --git a/charts/mail-gateway/values.yaml b/charts/mail-gateway/values.yaml
new file mode 100644
index 0000000..4810334
--- /dev/null
+++ b/charts/mail-gateway/values.yaml
@@ -0,0 +1,11 @@
+domains:
+  primary:
+    name: example.com
+    namespace: example-app-maddy
+    mx: mx1.example.com
+    certificateIssuer: public
+  others:
+  - name: other.com
+    namespace: other-app-maddy
+persistence:
+  size: 10Gi