How to Make a New Gmail Group
After you create the email group, instead of typing a single email address when writing mail, type the name of the group. Gmail will suggest the group. All you need to do is select the group to auto-populate the To field with all the email addresses from the group. Here’s how to create a group using Labels.
How to Create an Empty Group
You can also build an empty group, enabling you to add the contacts later or quickly add new email addresses.
How to Add Members to a Group
You can add new contacts to any existing group from the Contacts page.
How to Delete Members From a Gmail Group
Removing members from a group does not remove them from your Gmail contacts.
How to Delete a Group in Gmail
When you delete a label in Gmail, you have an option to delete the group while maintaining the contacts or to delete all the contacts in the group.