diff --git a/README.md b/README.md
index b27c715..610850f 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,10 @@ The following environment variables must be defined in your `.env` file:
   The password for the SMTP email account.
   `Required by deviceCheck.py.`
 
+- **SMTP_RECEIVER**  
+  The email address that will be receiving the notifications.
+  `Required by deviceCheck.py.`
+
 ---
 
 ## Notes