A simple and easy way to get your Office 365 email on your iPhone or iPad is to install the Microsoft Outlook app.

Here is a guide:

1

Open the Outlook for iOS app which looks like this:

If you do not have the Outlook iOS app installed, you can download it from the Apple Store here: Outlook iOS App

Note:  Available for iOS devices using iOS 10.0 or higher

2

First time using Outlook for iOS? Just tap Get Started.  If not, tap the menu icon the upper left corner.

Tap Settings  > Add Account > Add Email Account

3

Type your full email address, then tap Add Account

Note: If you are asked to select your email provider, you may have to set up your email account manually using Exchange or IMAP/POP

4

Enter your email account password and tap Sign In

Note: The sign in screen may look different for you depending on your email provider

5

If 2-step verification for Office 365 is enabled, verify yourself using the method you set up (6 digit code, phone call, or using the Microsoft Authenticator app.)

6

Tap Yes or Allow to give Outlook permission to sync calendar, contacts, etc