Words that can't be used in group addresses
This page is for administrators. To manage groups for your own account, visit Google Groups help.
Using Google Groups
The following words can't be used in the email addresses of groups that you create in groups.google.com:
Using the Admin console
If you create groups in the Google Admin console, you can use the reserved words shown above as a group email address. However, you can't add them as email aliases for a group.
About abuse and postmaster
Abuse and postmaster are handled differently than other reserved words. To learn more about creating and using groups with these email addresses, see Create abuse & postmaster groups.