For earlier versions: In the Moneycontrol.com Portfolio on the RHS under Alerts, you will find a link for Mail Alerts. On that page, you will be able to manage your Alerts, including unsubscribing from any of the alerts.
For Version 4: From navigation, go to “More”, where you will find the “Mail Alerts” option. Here, you will find all the active alerts for your portfolio. You can activate/deactivate one or more alerts from this space.Have more questions? Submit a request