diff --git a/roles/synapse/defaults/main.json b/roles/synapse/defaults/main.json
index b9b9a60..791dd98 100644
--- a/roles/synapse/defaults/main.json
+++ b/roles/synapse/defaults/main.json
@@ -24,6 +24,8 @@
 	"var_synapse_smtp_port": 587,
 	"var_synapse_smtp_username": "synapse@smtp.example.org",
 	"var_synapse_smtp_password": "REPLACE_ME",
+	"var_synapse_notifications_via_email_enabled_by_default": false,
+	"var_synapse_notifications_via_email_delay": "1h",
 	"var_synapse_admin_user_define": true,
 	"var_synapse_admin_user_name": "admin",
 	"var_synapse_admin_user_password": "REPLACE_ME"
diff --git a/roles/synapse/templates/homeserver.yaml.j2 b/roles/synapse/templates/homeserver.yaml.j2
index d46f115..a9c6729 100644
--- a/roles/synapse/templates/homeserver.yaml.j2
+++ b/roles/synapse/templates/homeserver.yaml.j2
@@ -172,7 +172,8 @@ email:
   require_transport_security: true
   notif_from: "%(app)s | {{var_synapse_title}}"
   enable_notifs: true
-  notif_for_new_users: false
+  notif_for_new_users: {{var_synapse_notifications_via_email_enabled_by_default | to_yaml}}
+  notif_delay_before_mail: {{var_synapse_notifications_via_email_delay}}
   subjects:
     password_reset: "[%(server_name)s] Passwort zurücksetzen"
     email_validation: "[%(server_name)s] Nutzer-Konto-Freischaltung"
diff --git a/roles/synapse/vardef.json b/roles/synapse/vardef.json
index ebf6005..8c4e584 100644
--- a/roles/synapse/vardef.json
+++ b/roles/synapse/vardef.json
@@ -110,6 +110,14 @@
 		"type": "string",
 		"mandatory": true
 	},
+	"notifications_via_email_enabled_by_default": {
+		"type": "boolean",
+		"mandatory": false
+	},
+	"notifications_via_email_delay": {
+		"type": "string",
+		"mandatory": false
+	},
 	"admin_user_define": {
 		"type": "boolean",
 		"mandatory": false