Go to Settings > Mail, Contacts, Calendars. The Accounts screen will open.
On the Accounts screen, tap the Exchange Account you want to remove.
Scroll down and click "Delete Account". A Delete Account warning window will open.
On the Delete Account warning window, click "Delete Account" to finish. You have successfully deleted your Exchange account.
Android
Go to Applications > Email. The Email screen will open.
On the Email screen, bring up the settings menu and tap Accounts. The Accounts screen will open.
Press and hold the Exchange Account you want to delete until the Menu window opens.
On the Menu window, click Remove Account. A Remove Account warning window will open.
On the Remove Account warning window, tap OK or Remove Account to finish. You have successfully deleted your Exchange account.
How to Add Email Account to Smart Phone:
iOS
Go to Settings > Mail, Contacts, Calendars > Add Account
Select Exchange as the account type.
Use your normal username (username@wlu.edu) and password .
Android
Go to Settings > Accounts > Add account > Email
Select Corporate/Exchange/ActiveSync as the account type.
Use your normal username (username@wlu.edu) and password.
If prompted for server, use outlook.office365.com and leave the domain blank.
You will be prompted to encrypt your phone. Please make sure you have a charger handy because encryption will not take place until the phone is plugged in.