Another feature of Office 365 is something called a Unified Group. A Unified Group includes a separate email account, OneDrive storage, and calendar that is separate from your own account. Emails sent to this group account will deliver email to each person in the group. You get 1TB of storage (which can be increased if need be) and you can work collboratively on documents online via OneDrive. This could be a good tool for collaborative work on a project or with a small group.
You can read more about Unified Groups here.
If you want to set one up, please contact your local IT support.