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W-Exchange Limits

  • Updated
  • This article is maintained by the Office of Information Technology

Email

Inbox Limits

  • Mailbox Limit: 50GB
  • Messages Limit: 1 Million messages per mailbox folder

Message Limits

Note: These are the sending limitations set in place on W-Exchange. The recipient's email service may enforce different limitations.
  • Message Size - Outlook for Windows: 150MB
  • Message Size - Outlook on the Web: 112MB
  • Message Size - Outlook for Mac: 35MB
  • Subject length: 255 characters
  • File attachments : 250 attachments
  • Attachment size limit - Outlook for Windows: 150MB
  • Attachment size limit - Outlook for Mac: 35MB
  • Attachment size limit - Outlook on the Web: 35MB

Recipient and Sender Limits

  • Recipient rate limit: 10,000 recipients per day
  • Recipient limit per message: 500 recipients
  • Message rate limit: 30 messages per minute

For more on email limits, please see this Microsoft help document.

OneDrive

Storage

  • 1TB of storage per user
  • Maximum file size of 250 GB

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