diff --git a/helm/charts/kratos/templates/statefulset-mail.yaml b/helm/charts/kratos/templates/statefulset-mail.yaml
index 3b48d5b16e..29e806e3a5 100644
--- a/helm/charts/kratos/templates/statefulset-mail.yaml
+++ b/helm/charts/kratos/templates/statefulset-mail.yaml
@@ -44,6 +44,7 @@ spec:
           {{- toYaml . | nindent 8 }}
         {{- end }}
     spec:
+      serviceAccountName: {{ include "kratos.serviceAccountName" . }}
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}