> ## Documentation Index
> Fetch the complete documentation index at: https://docs.opal.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Notifications

> Learn about the types of notifications sent by Opal.

The following are notifications sent by Opal, based on certain events or at a specified frequency. Users can unsubscribe to email, Slack, or Microsoft Teams notifications from **Settings > Notification Preferences** in the lower left corner.

| Notification type | Recipients | Email | Slack | Microsoft Teams | Google Chat | Configuration |
| - | - | - | - | - | - | - |
| Access review assigned to reviewers | Reviewers | ✔️ | ✔️ | ✔️ | ✔️ | [Access review settings](https://docs.opal.dev/docs/access-campaigns.md#notifications) |
| Incomplete access review reminders | Managers if enabled, reviewers | ✔️ | ✔️ | ✔️ Reviewers only | ✔️ | [Access review settings](https://docs.opal.dev/docs/access-campaigns.md#notifications) |
| Access reviews require access to be revoked on end systems | Auditors | ✔️ | ✔️ | ✔️ | | |
| Access revoked due to access reviews | Revoked users | ✔️ | ✔️ | | | |
| Access expired | Users with expired access | ✔️ | ✔️ | | | |
| Resources imported to Opal | Owners of connection/app containing resources | ✔️ | ✔️ | | | |
| User invited to Opal | Invited user | ✔️ | | | | |
| Access requested | Reviewers | ✔️ | ✔️ | ✔️ | ✔️ | |
| Access requested on behalf of another user | Requestor, affected user, and reviewers | ✔️ | ✔️ | ✔️ | | |
| User comments on access requests | Reviewers | ✔️ | ✔️ | ✔️ | | |
| Access request approved or denied | Requestors | ✔️ | ✔️ | ✔️ | | |
| Access request canceled | Reviewers | ✔️ | ✔️ | ✔️ | | |
| Access is expiring soon | Users with expiring access, Group leaders | ✔️ | ✔️ | ✔️ | | **Configuration Settings** > **Advanced** > **Access expiration notifications** |
| Access propagation failed or [owner groups are empty](https://docs.opal.dev/docs/configure-reviewers.md#empty-owner-notifications) | Admins and/or Owners | ✔️ | ✔️ | | | **Configuration Settings** > **Advanced** > **Error notification setting** |
| Manual ticket propagation successful | Requestors | | ✔️ | | | |


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