diff --git a/mailu/templates/front/deployment.yaml b/mailu/templates/front/deployment.yaml
index 992958ab..f84d7810 100644
--- a/mailu/templates/front/deployment.yaml
+++ b/mailu/templates/front/deployment.yaml
@@ -148,6 +148,9 @@ spec:
             - name: http
               containerPort: 80
               protocol: TCP
+            - name: sieve
+              containerPort: 14190
+              protocol: TCP
             {{ if not .Values.ingress.enabled }}
             - name: https
               containerPort: 443
diff --git a/mailu/templates/front/service.yaml b/mailu/templates/front/service.yaml
index e3a9bc9b..29c30a57 100644
--- a/mailu/templates/front/service.yaml
+++ b/mailu/templates/front/service.yaml
@@ -46,6 +46,9 @@ spec:
     - name: http
       port: 80
       protocol: TCP
+    - name: sieve
+      port: 14190
+      protocol: TCP
   {{ if not .Values.ingress.enabled }}
     - name: https
       port: 443