The majority of staff and faculty at Yale and all individuals who work in a Yale HIPAA Covered Entity use YaleConnect Office 365.
Undergraduates and students in Yale Graduate School of Arts and Sciences use EliApps (Google Apps for Education).
There are a very few number OF exceptions. If you are unsure what email system you or someone at Yale is using, please follow the steps below:
Displaying Full Message Headers in Microsoft Outlook (Windows)
Saving an Email Message as a File in Outlook for Windows
Finding Your IP and Network Hardware Addresses
Black & White, and Duplex Printing on Macintosh OS X 10.5 or Higher
How to Find Your Computer's Name
Java 1.7 Troubleshooting on Windows XP and Windows 7
Change Your Yale Password(s)
Virtual Private Network (VPN) for iOS (iPad or iPhone) devices