diff --git a/app/mail/page.tsx b/app/mail/page.tsx
index 7457d3d8..a907235f 100644
--- a/app/mail/page.tsx
+++ b/app/mail/page.tsx
@@ -14,7 +14,7 @@ export default async function Page() {
     <main className="w-full h-screen bg-black">
       <div className="w-full h-full px-4 pt-12 pb-4">
         <ResponsiveIframe 
-          src={process.env.NEXT_PUBLIC_IFRAME_MAIL_URL || ''}
+          src={process.env.NEXT_PUBLIC_IFRAME_MAIL_URL || 'https://mail.slm-lab.net'}
           allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
           className="relative"
           style={{