diff --git a/ansible/pre-deploy.yml b/ansible/pre-deploy.yml
index 4fa3401..fc840ae 100644
--- a/ansible/pre-deploy.yml
+++ b/ansible/pre-deploy.yml
@@ -74,3 +74,10 @@
           - /var/lib/alerta/alerta.conf:/app/alerta.conf
           - /var/lib/alerta/alertad.conf:/app/alertad.conf
           - /var/lib/alerta/config.json:/web/config.json
+
+    - name: Configure the dokku app environment
+      dokku_config:
+        app: alerta
+        restart: false
+        config:
+          SMTP_PASSWORD: "{{ smtp_password }}"