Add your Office 365 email to Outlook for iPhone and iPad. Then you can send and receive emails wherever you are.
Launch Outlook. (Don't have the app? Download it at the iTunes App Store. Open it and tap Get started, select your notification preference and go to Step 6.)
Tap Profile.
Tap Settings screen.
Within Settings, tap Add Account.
Select Add Email Account.
Enter your Office 365 email address and tap Add Account.
Enter your Office 365 email password and tap Sign In. (You might be asked to specify your account type as a Work or School or Personal. Select Work or School to continue.)
You'll see your new Office 365 address in the Setting screen. Go to the inbox, your email messages should start to load.