diff --git a/roles/apps/defaults/main.yml b/roles/apps/defaults/main.yml
index cc3e029..595762c 100644
--- a/roles/apps/defaults/main.yml
+++ b/roles/apps/defaults/main.yml
@@ -50,7 +50,7 @@ apps_vars:
 
   joplin:
     backup: true
-    sender: false
+    sender: true
     extra_tasks: true
     domain: joplin.{{ apps_base_domain }}
     port: 22300
diff --git a/roles/apps/templates/compose-files/joplin.yml.j2 b/roles/apps/templates/compose-files/joplin.yml.j2
index 0aed8bb..702e11b 100644
--- a/roles/apps/templates/compose-files/joplin.yml.j2
+++ b/roles/apps/templates/compose-files/joplin.yml.j2
@@ -16,14 +16,27 @@ services:
       POSTGRES_DATABASE: {{ databases.joplin.db }}
       POSTGRES_USER: {{ databases.joplin.user }}
       POSTGRES_PASSWORD: {{ databases.joplin.password }}
+      MAILER_ENABLED: 1
+      MAILER_HOST: postfix
+      MAILER_PORT: 587
+      MAILER_SECURE: 0
+      MAILER_NOREPLY_NAME: Joplin Server ({{ apps_vars.jopin.domain }})
+      MAILER_NOREPLY_EMAIL: noreply@{{ apps_vars.jopin.domain }}
       STORAGE_DRIVER: Type=Filesystem; Path=/storage
     networks:
       {{ apps_shared_docker_network }}:
         aliases:
           - joplin
+{% if 'postfix' in apps_include %}
+      {{ apps_postfix_docker_network }}:
+{% endif %}
     volumes:
       - "./data/storage:/storage:rw"
 
 networks:
   {{ apps_shared_docker_network }}:
     external: true
+{% if 'postfix' in apps_include %}
+  {{ apps_postfix_docker_network }}:
+    external: true
+{% endif %}