For an iPhone, go to the App Store. For an Android phone, go to the Google Play store. In either case, search for "Outlook". The Outlook App is a free app that will allow you to get your Pfeiffer email on your smart phone. Download the app. When asked to sign in, type in your full email email address and password. If you don't know your credentials, please contact the Help Desk for assistance.
iOS Link - Outlook for iOS
Play Store Link - Outlook for Android
(Updated 5/14/2019)
Previous article version indicated to download OWA, which has since been discontinued by Microsoft.