Google Groups setup for administrators - Manual (Page 11)

Test your new mailing group
Great, you created your new group! Next, try
it out.
View the auto-reply
Send a message to the group from an email
account outside of your domain. Check the
auto-reply message and edit as needed.
Note, the group may take up to 6 hours to
become active.
Reply to a message
Check that message sent to the group arrive
in your and other group members’ inboxes.
View the message in Groups
In Groups for Business, click My Groups and
select your group. Select a message from an
external user and click the Reply link. You
have the option to reply from the group
address rather than your address.
Learn more: Help for Groups
5. Train your team 1. Turn on Groups 4. Collaborative inboxes 2. Set up auto-reply 3. Add external users