Add commerce abandoned cart notification job

16/umbraco-commerce/how-to-guides/configuring-abandoned-cart-notification.md

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+---
+description: Learn how to configure the abandoned cart notification.
+---
+
+# Configuring Abandoned Cart Notification
+
+{% hint style="info" %}
+Available from Umbraco Commerce 16.1.0
+{% endhint %}
+
+## Abandoned Cart Recurring Background Job
+
+The abandoned cart recurring background job automatically sends reminder emails to customers about items left in their shopping carts. You can configure it using the steps below:
+- Go to Store Settings in your admin dashboard.
+- Select the store you want to configure.
+- Scroll down to the Notification Settings section.
+- Choose your Abandoned Cart Email Template. If the email template is not set, no notification will be sent but the webhooks can still be fired.
+- Set the period of minutes that a cart must be inactive before it is deemed to be abandoned. If the value is 0, the abandoned cart detection is disabled.
+- Enter the landing page url for customers to be redirected to when they click on the links in the abandoned cart email.
+- Click the Save button to apply your changes.
+
+![store notification settings](images/configuring-abandoned-cart-notification/store-notification-settings.png)
+
+
+The advanced settings can be configured in the `appsettings.json`
+
+```json
+{
+    "Umbraco" : {
+        "Commerce": {
+            // Optional settings
+            "AbandonedCartNotifierService": {
+                "FirstRunTime": "",
+                "Period": "1.00:00:00",
+                "NotificationBatchSize": 20
+            }
+        }
+    }
+}
+```
+
+The `appsettings.json` section supports the following keys.
+
+| Key | Description |
+| -- | -- |
+| `FirstRunTime` | The time to first run the scheduled cleanup task, in crontab format. If empty, runs imediately on app startup. |
+| `Period` | How often to run the task, in timespan format. Defaults to every 24 hours. |
+| `NotificationBatchSize` | The number of abandoned carts processed each time the job is run. |
+
+## Abandoned Cart Webhook
+A new webhook called Cart Abandoned has been added. It is triggered when the Abandoned Cart Recurring Background Job detects any abandoned carts. The POST payload will look like this:
+```json
+{
+  "orderIds": [
+    "8b2cfad6-a0eb-4b87-ad86-019768ad1308",
+    "95aa34bd-8a01-45a4-9492-019768ac6c61",
+    "db9a2cc5-621a-40a3-9fab-019768a79d0a"
+  ]
+}
+```
+
+## Abandoned Cart Conversion Rates Widget
+
+The Abandoned Cart Conversion Rates widget shows how effectively your store recovers lost sales by tracking the percentage of notified abandoned carts that turn into completed purchases.
+
+![Abandoned cart conversion rates widget](images/configuring-abandoned-cart-notification/abandoned-cart-conversion-rates-widget.png)
+
+
+