How do I disable RHN emails?

To disable daily summary and errata emails from Red Hat Network:

• Open your RHN preferences page: https://rhn.redhat.com/rhn/account/UserPreferences.do
• Uncheck Receive RHN email notifications
  
• Optionally, you may also unsubscribe from Red Hat marketing email at https://www.redhat.com/wapps/ugc/protected/prefs.html

Further resources:

• How often should I update my Red Hat Enterprise Linux server?
• How do I install Red Hat Enterprise Linux updates?
• Eclipse System Administration Best Practices