If Google Groups isn't available in your work or school account, ask your administrator to turn on Groups for Business. 
Group owners and managers can set up auto replies for their groups. Auto replies are messages sent automatically when people email the group. These replies let senders know their messages have been received.
If message moderation is turned on, an auto reply is sent only after a message is approved. Visit Approve or block new messages.
Set up auto replies
Requires the Owner or Manager role.
- Sign in to Google Groups.
- Click the name of a group.
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On the left, go to Group settings
Email options.
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In the Auto replies section, check the boxes next to the replies that you want to turn on and then enter a message.
You can set up separate auto replies for internal and external members and non-members.
- Click Save changes.
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