Step 3 of the Set up my Office 365 account series.
Add your Office 365 email to Apple Mail. Then you can send and receive business emails from your Mac.
Note: If Microsoft can't find your email, you'll be asked to enter your details manually:
• Username = your Office 365 email address
• Password = your Office 365 email password
• Internal URL = outlook.office365.com
• External URL = outlook.office365.com
Note: You might be asked to give permission to Office 365 as a part of your log in. Select the check box to Consent on behalf of your organization and Accept.