As a student you have access to your student mail. In the same service you have access to calendars and Todo's.
Once you are logged on @BI, you can choose E-mail in your personal menu on the left side. You will get a seperate window with office services.
On this page you can select the Inbox, Calendar, or Options.
(Under Options, you will find instructions to add more email addresses)
Select Inbox and you will come to your student mail.