Your @medschl or @SLCU email account is part of what is called your "Exchange" account, and contains your email, calender, contacts and tasks. @Cam addresses are usually on a different system and just provide email. There are multiple ways of accessing these accounts, which is best depends on your working habits:
childrenThere are several ways to access your University email account:
Via webmail - https://outlook.office.com/
Set up Outlook on your computer/device - Setting up Exchange Online