Choose Add Account available below iCloud tag and tab other (Other option only if your email provider not mentioned here. Scroll down and tab Mail, Contacts and Calendars option. Step 5 – Enter your Email Address, Description and click on Next. Step 1 – Click on Settings from your iPhone Home Screen. How to Set Up Office 365 on IOS 11 Default Mail App.Add your name, email address, and password (the description will populate automatically) and click Next Select Other in the list of email services. If you only want to use email, you can set up email using POP or IMAP. When you connect to your account using the Microsoft Exchange method, you’ll be able to access and synchronize your email, calendar, and contacts. You can connect to your Office 365 or other Exchange-based email on an Apple iPhone, iPad, or iPod Touch.