diff --git a/docs/api/notification_channels.md b/docs/api/notification_channels.md
index afbed9052a..e7828dde6c 100644
--- a/docs/api/notification_channels.md
+++ b/docs/api/notification_channels.md
@@ -33,17 +33,27 @@ Some events generate notifications that you can deliver to the users through one
 
 ### Available notification types
 
-- [`Ibexa\Contracts\FormBuilder\Notifications\FormSubmitted`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-FormBuilder-Notifications-FormSubmitted.html)
-- [`Ibexa\Contracts\Notifications\SystemNotification\SystemNotification`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-Notifications-SystemNotification-SystemNotification.html)
-- [`Ibexa\Contracts\OrderManagement\Notification\OrderStatusChange`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-OrderManagement-Notification-OrderStatusChange.html)
-- [`Ibexa\Contracts\Payment\Notification\PaymentStatusChange`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-Payment-Notification-PaymentStatusChange.html)
-- [`Ibexa\Contracts\Shipping\Notification\ShipmentStatusChange`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-Shipping-Notification-ShipmentStatusChange.html)
-- [`Ibexa\Contracts\User\Notification\UserInvitation`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-User-Notification-UserInvitation.html)
-- [`Ibexa\Contracts\User\Notification\UserPasswordReset`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-User-Notification-UserPasswordReset.html)
-- [`Ibexa\Contracts\User\Notification\UserRegister`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-User-Notification-UserRegister.html)
-- `Ibexa\Share\Notification\ContentEditInvitationNotification`
-- `Ibexa\Share\Notification\ContentViewInvitationNotification`
-- `Ibexa\Share\Notification\ExternalParticipantContentViewInvitationNotification`
+Several built-in notification types are available.
+TODO: Some/All are sent by various notifiers like event subscribers. 
+
+| Notification type                                                                                                                                                                        | Default recipients                                                       |
+|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------|
+| `Ibexa\AdminUi\Notifier\Notification\UserInvitation`                                                                                                                                     | TODO: Given email address                                                |
+| `Ibexa\AdminUi\Notifier\Notification\UserPasswordReset`                                                                                                                                  | TODO: Given email address                                                |
+| [`Ibexa\Contracts\FormBuilder\Notifications\FormSubmitted`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-FormBuilder-Notifications-FormSubmitted.html)                         | [Form submit email notification field](customize_email_notifications.md) |
+| [`Ibexa\Contracts\Notifications\SystemNotification\SystemNotification`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-Notifications-SystemNotification-SystemNotification.html) | TODO                                                                     |
+| [`Ibexa\Contracts\OrderManagement\Notification\OrderStatusChange`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-OrderManagement-Notification-OrderStatusChange.html)           | Order owner                                                              |
+| [`Ibexa\Contracts\Payment\Notification\PaymentStatusChange`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-Payment-Notification-PaymentStatusChange.html)                       | Order owner                                                              |
+| [`Ibexa\Contracts\Shipping\Notification\ShipmentStatusChange`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-Shipping-Notification-ShipmentStatusChange.html)                   | Order owner                                                              |
+| [`Ibexa\Contracts\User\Notification\UserInvitation`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-User-Notification-UserInvitation.html)                                       | TODO: Given email address                                                |
+| [`Ibexa\Contracts\User\Notification\UserPasswordReset`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-User-Notification-UserPasswordReset.html)                                 | TODO: Given email address                                                |
+| [`Ibexa\Contracts\User\Notification\UserRegister`](/api/php_api/php_api_reference/classes/Ibexa-Contracts-User-Notification-UserRegister.html)                                           | TODO                                                                     |
+| `Ibexa\Share\Notification\ContentEditInvitationNotification`<br>(alias `ibexa_content_edit_invitation`)                                                                                  | TODO: Given users                                                        |
+| `Ibexa\Share\Notification\ContentViewInvitationNotification`<br>(alias `ibexa_content_view_invitation`)                                                                                     | TODO: Given users                                                        |
+| `Ibexa\Share\Notification\ExternalParticipantContentViewInvitationNotification`<br>(alias `ibexa_external_participant_content_view_invitation`)                                             | TODO: Given email addresses                                              |
+
+Notice that `Ibexa\AdminUi\Notifier\Notification\UserInvitation` are sent by the back office and don't implement `Ibexa\Contracts\User\Notification\UserInvitation` which is made for front end users and other more generic usages.
+Same for the two `UserPasswordReset` in distinct namespaces.
 
 ### Available notification channels
 
@@ -79,6 +89,49 @@ This page contains several examples of subscriptions configuration.
     php bin/console ibexa:debug:config notifications.subscriptions --siteaccess=<siteaccess>
     ```
 
+    For example, the following command returns the subscription for the `admin` siteaccess.
+    You should see subscriptions to handle back office password reset and user invitation, and the share invitations through, at least, `email`.
+
+    ```bash
+    php bin/console ibexa:debug:config notifications.subscriptions --siteaccess=admin --json | jq
+    ```
+    ```json
+    {
+      "ibexa_content_edit_invitation": {
+        "channels": [
+          "ibexa",
+          "email"
+        ]
+      },
+      "ibexa_content_view_invitation": {
+        "channels": [
+          "ibexa",
+          "email"
+        ]
+      },
+      "ibexa_external_participant_content_view_invitation": {
+        "channels": [
+          "email"
+        ]
+      },
+      "Ibexa\\AdminUi\\Notifier\\Notification\\UserPasswordReset": {
+        "channels": [
+          "email"
+        ]
+      },
+      "Ibexa\\AdminUi\\Notifier\\Notification\\UserInvitation": {
+        "channels": [
+          "email"
+        ]
+      },
+      "Ibexa\\Contracts\\FormBuilder\\Notifications\\FormSubmitted": {
+        "channels": [
+          "email"
+        ]
+      }
+    }
+    ```
+
 #### Subscription example
 
 The following example shows how you can deliver notifications about Commerce-related activities through Slack: