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Outlook on the web - Check Mailbox Usage and Quota

All Office 365 Outlook accounts are by assigned 50GB by default. The following tutorial shows the process of how to check your mailbox usage using Outlook on the web.

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Log into Outlook on the web with your CULoginName@colorado.edu  and IdentiKey password.

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On the top right of the page, click on the Gear icon and select View all Outlook settings.

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Click General to then select Storage to see your current quota.

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On the bottom right hand side of the page you will see your account's usage. 

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If you need to send large files electronically and are concerned about exceeding the Exchange Online message or account size limit, OIT recommends the following: 

  • Large File Transfer: All faculty and staff are able to send files us to 20GB using OIT's Large File Transfer service.
  • Google Drive: All campus affiliates have access to up to 30GB of total storage in G Suite with their CU Boulder account. Learn how to share files using Google Drive.