Manage the received invitation
If you are signed in to webmail, go to the menu in the upper right corner of the screen and select ‘INBOX’.
On the left side of the screen are message/note folders that you can manage.
If you have received an invitation to an event, you can ‘Accept’, ‘Decline’ it or mark it as ‘Tentative’.
If you select to ‘Accept’ or ‘Tentative’, it will appear on your calendar.