Disk Quotas and Attachment Sizes
Quotas
The default quota (how much storage space is allowed for each person – including the space required to store all e-mail, calendar data, contact information and task management data) for each mailbox is 500 megabytes (500MB). Warning messages will be sent to users when their mailbox size reaches 450MB. Sending e-mail will be prohibited when a mailbox reaches 500MB and receiving e-mail will be prohibited when a mailbox reaches 600MB.
Quota Increase Requests
Quota increases can be requested at https://eid.colostate.edu by selecting the "Request Central Exchange Quota Increase" option from the "Modify your eID" menu.
Tip: for more information on how to free up your mailbox space, read the "Archiving mail and freeing mailbox space with PSTs" topic on this website.
Attachment Sizes
Individual message size is limited to 60MB, which will accommodate attachments up to 50MB in size.
Check Your Mailbox Size
You can check the size of your central Exchange mailbox using any of the 3 methods below:
- From Outlook: Right-click on the “Mailbox – [Your Name]” item in the mail navigation pane, click “Properties”, and then click the “Folder Size” button. The size of your mailbox is listed in kilobytes - divide by 1000 to determine the size of your mailbox in megabytes (MB).
- eID Modify Website: Login to the eID Modify site. Click the "Show my Information” link. Quota information for Central Exchange appears at the bottom of the resulting page.
- Outlook Web Access: Login to Outlook Web Access. In the “Mail” view (default view), hover your mouse pointer over “[Your Last Name], [Your First Name]” at the top of the mail tree. The size of your mailbox and your quota information should appear.

