diff --git a/compose.smtp.yml b/compose.smtp.yml
index cd7436b..8696718 100644
--- a/compose.smtp.yml
+++ b/compose.smtp.yml
@@ -13,6 +13,19 @@ services:
       - MAIL_FROM_ADDRESS
       - MAIL_DOMAIN
 
+  cron:
+    secrets:
+      - smtp_password
+    environment:
+      - SMTP_AUTHTYPE
+      - SMTP_HOST
+      - SMTP_SECURE
+      - SMTP_NAME
+      - SMTP_PORT
+      - SMTP_PASSWORD_FILE=/run/secrets/smtp_password
+      - MAIL_FROM_ADDRESS
+      - MAIL_DOMAIN
+
 secrets:
   smtp_password:
     external: true