Mac Outlook 2011 supports Office 365 email accounts! The entry point in the UI for Office 365 or Exchange Online accounts is the same as on premise Exchange accounts.
- To add your Office 365 email account, click on 'Add Account' in the welcome screen:
- In the Accounts dialog, just pick the Exchange Account option:
- Use your Office 365 account as email address and username:
If you previously dismissed the welcome screen or need to add additional accounts, the Accounts dialog can also be accessed via Tools > Accounts or Outlook > Preferences and then selecting the second option under Personal Settings for Accounts:
or 
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