If your email accounts are provided through Office 365 then this guide will show you how to add your email accounts to iOS devices. To add the email account to your iOS device please follow the following instructions.
1. Go to Settings > Passwords & Accounts
From here you can see your existing list of email accounts. Choose "Add Account"
2. Choose "Microsoft Exchange"
3. Enter your email address
It can be useful to set a description here as this is what will appear in the mailboxes list in Mail app
4. Choose "Sign In"
Because the account is linked to Office 365 Exchange you can use the option to Sign In and it will automatically get to correct settings
5. Enter your password
You should be presented with a password prompt on a page with your company's logo. You should have already set your password but if you need help with passwords please see this guide
6. Choose what to sync
It is recommended to sync mail and calendar as a minimum. It is up to you if you wish to sync anything else
You can now open Mail app and if you have more than 1 account you can go to the Mailboxes view to see all of them or use the "All Inboxes" option to see all of your email together
Any problems with email please submit a ticket by clicking the link in the top-right corner of this page or sending an email to firstname.lastname@example.org