Go to «Settings», “Passwords and accounts”, choose “Add Account” and “Exchange”
Enter your email address and add a description, you will be asked for your password on the next page.
If the mail is not set up automatically, select "Manual Setup", and add mail.asp.no as the server and enter your email address in the username field and press “Next”. You can then choose what you want to sync. Press "Save" to finish the setup.