For Microsoft Exchange 2013 email accounts
Setup Microsoft Exchange 2013 on your Mac, to access your email, calendar, and contacts.
Tip: Press command ⌘ + SPACE on the keyboard at the same time to search for the Mail app.
From the menu bar, click Mail > Add Account.
Select Exchange and click Continue.
Enter your Name and Microsoft Exchange 2013 Email Address, then click Sign In.
Click Sign In again.
Enter your Password and click Sign In.
Enable or disable the synchronisation of Mail, Contacts, Calendar, Reminders, and Notes, then click Done to complete the process.
Your Microsoft Exchange 2013 setup is now complete and the services you have chosen to synchronise will now begin downloading. Please allow time for all the data to synchronise to your Mac.