diff --git a/apps/web/.env.example b/apps/web/.env.example
index adfe836..45149a0 100644
--- a/apps/web/.env.example
+++ b/apps/web/.env.example
@@ -12,3 +12,11 @@
 # Example:
 # SERVERVAR="foo"
 # NEXT_PUBLIC_CLIENTVAR="bar"
+
+RESEND_API_KEY=""
+
+# Optional; defaults to "contact@paykit.sh"
+# RESEND_FROM_EMAIL="contact@paykit.sh"
+
+# Optional; defaults to "contact@paykit.sh"
+# RESEND_TO_EMAIL="contact@paykit.sh"