diff --git a/docker-compose.yaml b/docker-compose.yaml
index f595507..4216223 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -469,13 +469,27 @@ services:
   up-mavt-suite-backend:
     image: gitea.psi.ch/images/up-mavt-suite-backend:0.9.1
     container_name: up-mavt-suite-backend
-    env_file:
-      - .env
     environment:
-      MONGO_URI: mongodb://up-mavt-suite-mongo:27017/elicitation
-      FLASK_ENV: production
-      ADMIN_PASSWORD: ${MCDA_UP_ADMIN_PASSWORD}
-      OAUTH2_CLIENT_SECRET: ${MCDA_UP_OAUTH2_SECRET}
+      MONGO_URI=mongodb://up-mavt-suite-mongo:27017/elicitation
+      FLASK_ENV=production
+      ADMIN_PASSWORD=${MCDA_UP_ADMIN_PASSWORD}
+      OAUTH2_CLIENT_SECRET=${MCDA_UP_OAUTH2_SECRET}
+      # Email / SMTP configuration
+      # DISABLE_EMAIL=false
+      SMTP_HOST=smtp.office365.com
+      SMTP_PORT=587
+      SMTP_USER=mcda@psi.ch
+      EMAIL_AUTH_MODE=oauth2
+      OAUTH2_TENANT_ID=50f89ee2-f910-47c5-9913-a6ea08928f11
+      OAUTH2_CLIENT_ID=201ba262-3c76-41fb-8942-dcefb7729caa
+      # OAuth2 client secret is injected from deployment environment variable:
+      # MCDA_UP_OAUTH2_SECRET
+      OAUTH2_SCOPE=https://outlook.office365.com/.default
+      # OAUTH2_TOKEN_URL=
+      OAUTH2_USERNAME=mcda@psi.ch
+      SMTP_USE_TLS=true
+      EMAIL_FROM=mcda@psi.ch
+      APP_BASE_URL=https://mcda-up-test.psi.ch/
     depends_on:
       - up-mavt-suite-mongo
     networks: