SPWebApplication.SendUnusedSiteCollectionNotifications Property
Gets or sets a value that indicates whether a notification is sent to owners of unused sites.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: No
Property Value
Type: System.Booleantrue if send notifications are sent to site owners; otherwise, false. The default value is false.
The amount of time that determines whether the site is unused or not is contained in the UnusedSiteNotificationPeriod property.