SpaceGuard SRM is a directory based quota management tool featuring quota enforcement, notification through popup and SMTP/MAPI mail, and Active Directory integration. To minimize configuration effort, its Auto-Add quotas will manage quotas for you in the background and automatically synchronize your quotas with new or removed home directories according to the rules you defined in your quota policy. The Active Directory integration ensures your quotas are automatically assigned to its owner and e-mail notifications are always delivered to the correct user.