Create Collaborative Inboxes

1. Sign in to your Google Admin console.

   Sign in using your administrator account (does not end in @gmail.com).

2. From the Admin console Home page, go to Groups.
3. In the upper left corner, click Create group.
4. Enter the following information, then click Next:
    

   Setting	Description
   Name	Name that identifies the group in lists and messages. Use these guidelines: Names can be up to 73 characters long. Use names that make it easy to identify the group’s purpose.
   Description	Purpose of the group or how it's used. The information appears on the group’s About page. You could include information about group members, group content, an FAQ, links to related groups, and so on.
   Group email	​Email address used for the group. If you have more than one domain, select the appropriate domain from the list. Email addresses can be up to 63 characters long. This limit doesn't include the domain portion of the address, such as @gmail.com. Some words are reserved and can't be used as email addresses. For details, review Words that can't be used in email addresses and if you create the group at groups.google.com, review Understand reserved words. If you're creating your group in a work or school account, your email address might include a suffix, such as -user-created. For example, if your group name is training, the actual email address might be training-user-created@your_domain.
   Group owner(s)	(Optional) Search for the name or email address of users who will have the owner role for this group.

5. Choose settings for group members with owner, manager, and member roles. Then choose whether the group is open to the entire organization and people outside the organization (external users):
    

6. Setting	Description
   Access type	Select a preconfigured access type or choose settings manually: Public—Open to anyone in your organization. Depending on your settings, it can also be open to people outside your organization. Groups with the Public setting might get more spam messages. Malicious senders often send spam to email addresses they find on public websites. Team—Open to a specific team in your organization. Select this setting to create a group for a specific internal department or team. Announcement only—Used to broadcast information to a group. For example, use this setting for a group that receives company news. Restricted—A private group setting for employees who share private or sensitive information. Custom—Shows that settings have been manually configured.
   Access settings	Choose settings for each category of users. These settings form the basis of what people are allowed to do in the group. However, you can also set role-based permissions for the group in Google Groups, groups.google.com. Learn about group roles. Note: The External category includes anyone outside your organization. External people can be group members or non-members. Contact owners—Who is allowed to email group owners directly. View members—Who is allowed to view group members. View topics—Who is allowed to view topics posted in the group. Non-members outside your organization (External) can only view topics if Groups for Business sharing options are set to Public on the Internet. Publish posts—Who is allowed to publish messages to the group.
   Membership settings	Choose whether group members who have the owner, manager, or member role can add people to the group directly, invite people to join the group, and approve requests to join the group.
   Who can join the group	Choose how to add people to the group: Anyone in the organization can ask—People in the organization must ask and then be approved before they can join the group Anyone in the organization can join—People in the organization can add themselves to the group directly Only invited users—People can join the group only if they’re invited
   Allow members outside your organization	Turn this setting off to prevent external people from being added to the group. Or turn the setting on to allow external people in the group. Note: If you’re a G Suite administrator for Google Groups, you can always add external people to groups in the Google Admin console, regardless of the external membership setting.

7. Click Create Group.Wait a few minutes for your new group to become active before sending a message to it. Otherwise, you might get a notification that your message couldn't be delivered.

If you created your group in new Groups or in the Google Admin console, set the group type in classic Groups.

Note: This feature requires Google Groups for Business. Currently, it’s only available in classic Groups, but it’s planned for new Groups.

1. Sign in to Google Groups.
2. Click My groups.
3. Click the name of a group.
4. Near the top right, click Manage group. A menu appears on the left.
5. On the left, click Information  Advanced.
6. In the Reset group section next to "Select a group type," click the Down arrow . 
7. Click Reset group.
8. Return to new Groups:
   1. In the top right, click Settings .
   2. At the top left, click Visit new Groups.

Wait a few minutes for your new group to become active before sending a message to it. Otherwise, you might get a notification that your message couldn't be delivered.