@Dayalan T - Welcome to Microsoft Q&A and thanks for reaching out to us.
You can check the alert rule configuration, notification settings, email provider or spam filter settings, and try disabling and re-enabling the alert rule to troubleshoot the issue.
- There may be an issue with the alert rule or the Azure Monitor service that is preventing the resolved notification from being sent. In this case, you can try disabling and re-enabling the alert rule, or contacting Azure support for further assistance
- The resolved notification for the instance may have been sent to a different email address or notification channel. You can check the notification settings for the alert rule to ensure that the correct email address or notification channel is configured, or it may have been blocked or filtered by your email provider or spam filter. You can check your email provider or spam filter settings to ensure that the resolved notification is not being blocked or filtered.
Hope this helps. and please feel free to reach out if you have any further questions.
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