BYUI eMailbox Limits

Mailbox Size Limits

The current email system on campus allows employees 50GB space.  Here's how to tell how close you are to the limit:

In Outlook 2010/2013:

  1. Right-click your Mailbox
  2. Data File Properties...
  3. Folder Size...

In Outlook Web Access (OWA):

(Only viewable in Microsoft Internet Explorer)

  1. Log-in to
  2. In the upper left, you will see the folder list. Your name will be displayed near the top as Lastname, Firstname. Mouse over your name. A small box with your storage information will appear.

Mailbox Cleaning

If you need to clean your mailbox click here for some tips.

    Message Size Limits

    In order to keep things running smoothly large files cannot be sent as email attachments.

    • Most email servers are configured to reject messages larger than 10 MB.  BYUI allows users to send attachments up to 25MB.  If your "big" file attachment is bound for some other destination, it may be rejected by another server along the way.
    • Here's why Microsoft Office 365 makes restrictions: more about size restrictions here.
    • For more information about sending mass messages, please check our Mass Email help page.
    • Here are some options for sending a larger file:
      • Cloud storage provides a way around the file size limitations.  Instead of sending a file via email, upload it to a cloud service and email just a link to the file to your recipient. The recipient clicks on the link in your email to download or view the file from the cloud.
        • is currently supported.
        • OneDrive for Business is coming soon.