diff --git a/deployments/examples/opencloud_full/.env b/deployments/examples/opencloud_full/.env
index dc1ca373f5..a437d30a77 100644
--- a/deployments/examples/opencloud_full/.env
+++ b/deployments/examples/opencloud_full/.env
@@ -116,6 +116,8 @@ SMTP_USERNAME=
 SMTP_PASSWORD=
 # Authentication method for the SMTP communication.
 SMTP_AUTHENTICATION=
+# Encryption method for the SMTP communication. Possible values are 'starttls', 'ssltls' and 'none'
+SMTP_TRANSPORT_ENCRYPTION=
 # Allow insecure connections to the SMTP server. Defaults to false.
 SMTP_INSECURE=
 
diff --git a/deployments/examples/opencloud_full/opencloud.yml b/deployments/examples/opencloud_full/opencloud.yml
index 51799dea2f..f747fbc477 100644
--- a/deployments/examples/opencloud_full/opencloud.yml
+++ b/deployments/examples/opencloud_full/opencloud.yml
@@ -41,7 +41,10 @@ services:
       NOTIFICATIONS_SMTP_PORT: "${SMTP_PORT}"
       NOTIFICATIONS_SMTP_SENDER: "${SMTP_SENDER:-OpenCloud notifications <notifications@${OC_DOMAIN:-cloud.opencloud.test}>}"
       NOTIFICATIONS_SMTP_USERNAME: "${SMTP_USERNAME}"
+      NOTIFICATIONS_SMTP_PASSWORD: "${SMTP_PASSWORD}"
       NOTIFICATIONS_SMTP_INSECURE: "${SMTP_INSECURE}"
+      NOTIFICATIONS_SMTP_AUTHENTICATION: "${SMTP_AUTHENTICATION}"
+      NOTIFICATIONS_SMTP_ENCRYPTION: "${SMTP_TRANSPORT_ENCRYPTION}"
       # make the registry available to the app provider containers
       MICRO_REGISTRY_ADDRESS: 127.0.0.1:9233
       NATS_NATS_HOST: 0.0.0.0