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Calendar: Catmail

Online calendar tool for scheduling meetings with colleagues, students, and other OHIO account holders.

2021 University Holidays

2021 OHIO holiday calendar file. Importing this file into your primary Exchange calendar will block your calendar, showing you as "Busy" for each day of the 2021 HR Holiday Calendar


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


  • Create appointments and events
  • Organize meetings
  • View group schedules
  • Share calendar and agenda items with others
  • Delegate management of your calendar to another individual


  • 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 for Android and iOS
    • iOS built-in Calendar app: iOS 11 or newer


  • Faculty, staff, emeriti, students, applicants, alumni, and sponsored guest accounts

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