About this service

Provided By

Other names for this service

  • O365 Email
  • Exchange Online

Service documentation

Why to use this service

Exchange provides a rich featureset to mailbox users for sending/receiving and organizing email using a highly-available and redundant infrastructure.


Email, calendaring, contacts, tasks

Getting and using this service

Who can use this service

Undergraduate students
Graduate/Professional Students

How to get this service

New faculty, staff and students will automatically get an Exchange online mailbox created for them. Unit IT Pros can request resource mailboxes by emailing .


No charge

How to use this service

Exchange users can access their accounts using any supported web browser or software client over an active internet connection.

Quotas and usage restrictions

Mailboxes on the Exchange system have auto growing quotas that are calculated and adjusted nightly. The quotas are high enough that they should not be reached by any normal operations and are only in place as a safety measure to protect the system. Internal messages (sent from one Exchange user to another Exchange user) must be less than 100MB in size. External messages (sent to or from a different email system) must be less than 65MB in size. This latter quota is controlled by the Email Relay service.

Sensitive data considerations

None Listed

Hours and support

Standard service hours


Scheduled maintenance hours

Exchange is redundant so it remains available during maintenance windows. Work is normally scheduled for 10:00 PM to 11:55 PM. Once a month extended maintenance is performed for security and system updates. This maintenance window is normally scheduled for a Friday 10:00 PM to Saturday 10:00 AM period.

Staffed support hours

8:00 a.m. to 5:00 p.m. Monday through Friday

How to report issues

Contact the Technology Services Help Desk at 217-244-7000 or