feat: Implement replyTo for contact form emails and refine success/error message layout.

app/actions/contact.ts

@@ -71,6 +71,7 @@ export async function sendContactFormAction(formData: FormData) {
     );
 
     const notificationResult = await sendEmail({
+      replyTo: email,
       subject: notificationSubject,
       html: notificationHtml,
     });