You can view all alerts on the Alert Management page.

Go to the Operation Center page. In the left-side navigation pane, choose Alarm > Alert Management. On the page that appears, you can configure the Rule ID/Name, Recipient, Alert Time, Notification Method, and Rule Type parameters to filter alerts.
Note You can view only alerts that are reported within the last 30 days.

You can also view the details about each alert, such as the notification method and status. To view the details about an alert, click View Details in the Actions column that corresponds to the alert.