Select Settings > email+accounts and do one of the following:
- If you have Windows Phone 8 or 8.1, tap Add an account > Exchange.
- If you have Windows Phone 7 or 7.5, tap Add an account > Outlook.
Enter your Office 365 email address, your password, and then tap Sign in. You phone will try to set up your account automatically. If you need help finding the necessary settings, contact your team or organisation IT or try sign in at portal.office.com or your work or school website.