There are 5 ways:
NOTE: Alumni can only use options 2-5 listed above.
Or for step by step instructions (including screenshots) see myUniSA email access for students page.
Or for step by step instructions (including screenshots) see Student Web access to student email page.
Or for step by step instructions (including screenshots) see Microsoft direct access to student email page.
Or for step by step instructions (including screenshots) see Office 365 direct access to student email page.
Step by step instructions (including screenshots) can be found on the Microsoft help page.