diff --git a/changelog.d/2-features/gundeck-configure-notificationTTL b/changelog.d/2-features/gundeck-configure-notificationTTL
new file mode 100644
index 00000000000..c7dc6f5a2c5
--- /dev/null
+++ b/changelog.d/2-features/gundeck-configure-notificationTTL
@@ -0,0 +1,3 @@
+Make gundeck's notificationTTL configurable. The value defines how long
+notifications are (at most) stored in the database. Decreasing this value e.g.
+helps to safe database space on test environments.
diff --git a/charts/gundeck/templates/configmap.yaml b/charts/gundeck/templates/configmap.yaml
index cac6782ab9a..bd49b906760 100644
--- a/charts/gundeck/templates/configmap.yaml
+++ b/charts/gundeck/templates/configmap.yaml
@@ -55,7 +55,7 @@ data:
 
     settings:
       httpPoolSize: 1024
-      notificationTTL: 2419200
+      notificationTTL: {{ required "config.notificationTTL" .notificationTTL }}
       bulkPush: {{ .bulkPush }}
       {{- if hasKey . "perNativePushConcurrency" }}
       perNativePushConcurrency: {{ .perNativePushConcurrency }}
diff --git a/charts/gundeck/values.yaml b/charts/gundeck/values.yaml
index 75f3ce54ef7..80816a0eaad 100644
--- a/charts/gundeck/values.yaml
+++ b/charts/gundeck/values.yaml
@@ -57,6 +57,11 @@ config:
   # the database if notifications have inlined payloads.
   internalPageSize: 100
 
+  # TTL of stored notifications in Seconds. After this period, notifications
+  # will be deleted and thus not delivered.
+  # The default is 28 days.
+  notificationTTL: 2419200
+
 serviceAccount:
   # When setting this to 'false', either make sure that a service account named
   # 'gundeck' exists or change the 'name' field to 'default'