diff --git a/infra/.env.example b/infra/.env.example
index 8ff5295..9f654ef 100644
--- a/infra/.env.example
+++ b/infra/.env.example
@@ -1,5 +1,5 @@
 # Your domain — apps will be served at <name>.yourdomain.com
 DOMAIN_SUFFIX=yourdomain.com
 
-# Email address for Let's Encrypt expiry notices (required for HTTPS)
-ACME_EMAIL=you@example.com
+# Optional: email for Let's Encrypt expiry notices.
+# If you want this, uncomment the `email` line in proxy/Caddyfile instead.
diff --git a/infra/docker-compose.yml b/infra/docker-compose.yml
index c041ec8..8bc6369 100644
--- a/infra/docker-compose.yml
+++ b/infra/docker-compose.yml
@@ -55,7 +55,6 @@ services:
       - "2019:2019"   # admin API
     environment:
       DOMAIN_SUFFIX: ${DOMAIN_SUFFIX:-localhost}
-      ACME_EMAIL: ${ACME_EMAIL:-}
     volumes:
       - ../proxy/Caddyfile:/etc/caddy/Caddyfile:ro
       - caddy-data:/data
diff --git a/proxy/Caddyfile b/proxy/Caddyfile
index 322af1c..2cf9439 100644
--- a/proxy/Caddyfile
+++ b/proxy/Caddyfile
@@ -15,8 +15,8 @@
     # Admin API — used by hiy-server to add/remove app routes dynamically.
     admin 0.0.0.0:2019
 
-    # Contact email for Let's Encrypt expiry notices.
-    email {$ACME_EMAIL}
+    # Uncomment and set your email for Let's Encrypt expiry notices:
+    # email you@example.com
 }
 
 # HIY dashboard — served at your root domain.