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Microsoft Office 365, branded as "Cowboy Mail" is the email system used by OSU students, faculty, and staff. Microsoft Office 365 also includes access to other Microsoft applications and services.


OSU email addresses always end in “” and are where university communications are sent. Users may also access other Microsoft® Office 365™ services like Word or PowerPoint. Students retain their “” email address after graduation.

Getting Started

For the web based version of Cowboy Mail go to or see the setup instructions below.


Go to Microsoft Office 365.


Available to

Students and employees

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