Once a group has outlived its purpose, the owner of the group (the person who created it), can delete it to free up resources and to remove the group from being listed or displayed.
Having said the above, there is a caveat: When you delete a group, you are permanently removing everything related to your group, (i.e., conversations, files, the group notebook, and Planner tasks). If you delete a group accidentally, you can ask your IT admin to recover the group within 30 days of it being deleted. ~ Source
Follow the steps below to learn how:
- In the left-hand pane, under Groups, select your group.
- At the top of the page, select
| Settings. - Select Edit group.
- At the bottom of the Edit group window, select Delete group.
- Select the check box next to I understand that all group content will be deleted and select Delete.
For Outlook on the Web, follow the directions below:
- In the left-hand pane, under Groups, select your group.
- At the top of the page, select
| Edit group. - At the bottom of the Edit group pane, select Delete group.
- Select the check box next to I understand that all group content will be deleted and select Del
—