Kindly follow the below steps in order to create distribution groups via Office365
1. Login to https://portal.office.com using admin email.
2. Click ‘Admin’ from applications
3. Click ‘Exchange’ under ADMIN from the left hand side panel.
4. Click ‘recipients’
5. Click ‘Groups’
6. Click + sign to add distribution group. For Eg: [email protected]
7. Under ‘membership’, you can add member email IDs.
8. Under ‘delivery management’, you can decide who are the senders. Whether the sender should be from Inside the organisation or from outside also.
9. Save.
10. Mails sent to distribution group will be received by the member email IDs.