Automatically Deleting Client Data
It may be necessary to remove client data from your systems once they have terminated all services and a period of time has lapsed. WHMCS can automate this deletion process for you:
1. Navigate to Setup > Automation Settings
2. Scroll down to the Data Retention Settings section
3. Select the After no invoice or transaction activity has occurred for the following number of months option
4. Specify the number of months of no activity after which you wish the client's data to be deleted
5. Click Save Changes
When the daily automation tasks are performed, any clients who have been inactive for the specified number of months will be irrevocably erased from your WHMCS installation.
More information is available in our documentation.