diff --git a/files/gramps/docker-compose.template.yml b/files/gramps/docker-compose.template.yml
index baa8a1a..c3f8f09 100644
--- a/files/gramps/docker-compose.template.yml
+++ b/files/gramps/docker-compose.template.yml
@@ -33,7 +33,7 @@ services:
       GRAMPSWEB_EMAIL_PORT: "{{ postbox_port }}"
       GRAMPSWEB_EMAIL_HOST_USER: "{{ postbox_user }}"
       GRAMPSWEB_EMAIL_HOST_PASSWORD: "{{ postbox_pass }}"
-      GRAMPSWEB_EMAIL_USE_TLS: "false"
+      GRAMPSWEB_EMAIL_USE_STARTTLS: "true"
       GRAMPSWEB_DEFAULT_FROM_EMAIL: "gramps@vakhrushev.me"
 
       # media storage