Setting up Office 365 email accounts on iOS
1. Tap Settings > Mail, Contacts, Calendars >Accounts > Add account > Email.
3. Enter your full email address, for example email@example.com, and your password, and then tap Next.
4. By default, Mail, Contacts, and Calendar information are synchronized. Tap Save.
5. If you’re prompted to create a passcode, tap Continue and type a numeric passcode. If you’re prompted and don’t set up a passcode, you can’t view this account on your device. You can also set up a passcode later in your settings.
Note: If iOS mail does not automatically discover your email settings, you will need to enter the following if it asks you: Mail Server – outlook.office365.com – User Name Type your email address, for example firstname.lastname@example.org.