diff --git a/src/pkg/controller/configmap/controller.go b/src/pkg/controller/configmap/controller.go
index 065af24..34ba38c 100644
--- a/src/pkg/controller/configmap/controller.go
+++ b/src/pkg/controller/configmap/controller.go
@@ -45,6 +45,10 @@ ExternalPort: %d
 ExternalSecure: %t
 TLS:
   Enabled: false
+Projections:
+  Customizations:
+    smtp_configs:
+      BulkLimit: 2000
 SystemAPIUsers:
   - %s:
       KeyData: %s
@@ -59,7 +63,7 @@ SystemAPIUsers:
 	opts := builder.ConfigMapOpts{
 		Zitadel:   zitadel,
 		Key:       key,
-		Immutable: true,
+		Immutable: false,
 		Data:      config,
 	}
 	configmap, err := r.Builder.BuildConfigMap(opts, zitadel)