Set up email in the iOS Mail app
To use the built-in Mail app on your iPhone or iPad, choose your email provider here:
Set up Office 365 email in the iOS Mail app
If you have an Office 365 work or school account, use these instructions to set up your email with your iOS device.
1. Go to Settings, scroll down to Mail, Contacts, Calendars, and then tap Add Account.
2. Select Exchange.
3. Enter your email address, your password, and a description of your account. Your email address should be your Office 365 business account or school account such as yourname@yourdomain.com, yourname@domain.onmicrosoft.com, oryourname@schoolname.edu. Once your credentials have been entered, tap Next.
4. If you're prompted to enter additional server settings, see POP and IMAP settings for Outlook Office 365 for business.
5. Choose the apps you want your email account to sync with your iOS device and then tap Save. Your email account is now ready for use with the iOS Mail app.