You can configure Red Hat Network to send you email notifications of new and updated software packages as soon as the packages are available through RHN. You receive one email per Erratum, regardless of the number of affected systems. You can also schedule package installs or package updates. The benefits include:
Reduced time and effort required by system administrators to stay on top of the Red Hat Errata list
Minimized security vulnerabilities in your network through the application of updates as soon as Red Hat releases them
Filtered list of package updates (packages not relevant to your network are not included)
Reliable method of managing multiple systems with similar configurations