diff --git a/argocd/apps/openproject/values-openproject.yaml b/argocd/apps/openproject/values-openproject.yaml
index 3304aea..19c9a39 100644
--- a/argocd/apps/openproject/values-openproject.yaml
+++ b/argocd/apps/openproject/values-openproject.yaml
@@ -40,6 +40,22 @@ spec:
             name: "OpenProject Admin"
             mail: "inno-netz@zpd.polizei.niedersachsen.de"
 
+          extraEnvVars:
+            - name: EMAIL_DELIVERY_METHOD
+              value: "smtp"
+            - name: SMTP_ADDRESS
+              value: "192.168.4.125"
+            - name: SMTP_PORT
+              value: "25"
+            - name: SMTP_DOMAIN
+              value: "innovation-hub-niedersachsen.de"
+            - name: SMTP_AUTHENTICATION
+              value: "none"
+            - name: SMTP_ENABLE_STARTTLS_AUTO
+              value: "false"
+            - name: SMTP_OPENSSL_VERIFY_MODE
+              value: "none"      
+
         memcached:
           global:
             readOnlyRootFilesystem: false