Ohio University

Email: Catmail

Office 365-based email accounts for OHIO students, faculty, staff, and alumni who graduated after 2000. 


Many older email/calendar applications will stop working later this year when Microsoft disables Basic Authentication. Find out if you are affected. 


  • New look comes to Outlook Online (Catmail) (from Microsoft)
  • Rich text and HTML messages
  • Web and Outlook client access
  • Mobile device support
  • Tight integration with other Office 365 tools
  • Advanced security 


  • PC and Mac
    • Outlook 2016 or newer
    • Mac Mail and Calendar built-in apps: Mac OS 10.14 (Mojave) or higher
  • Mobile Applications
    • Outlook App: iOS and Android
    • iOS Mail and Calendar built-in apps: iOS 11 or newer


  • Current applicants
  • Enrolled undergraduate and graduate students
  • Current employees
  • Retirees
  • Emeriti
  • Alumni who graduated after 2000

How to Request

  • No request needed. The service is enabled automatically based on your role at the University.