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Summary
Beginning Tuesday, May 27, 2025, the Division of Information Technology (IT) enabled default email sending limits on all Creighton University Microsoft 365 accounts.
Guidelines
Who is impacted?
The limits defined below will apply to all users. Based on research, normal Creighton email sending habits do not exceed these limits.
What are the new limits?
Faculty/Staff and anyone not identified below
- 750 internal recipients per hour
- 750 external recipients per hour
- 1500 max recipients in 24 hours
- Recipient limit per message: 500 recipients
- Message rate limit: 30 messages per minute
Enrolled Student Policy
Restricted Policy for Alumni, Retirees, and Accepted Students
- 50 internal recipients per hour
- 50 external recipients per hour
- 100 max recipients in 24 hours
What if I need to send more emails?
Creighton’s Microsoft 365 email accounts are intended for personal and professional one-on-one communication. They should not be used to send bulk or mass emails. If you need to regularly send bulk messages or exceed your default email limits, please use a commercial bulk email service or request a Mailman listserv.
For details on Mailman listservs, visit the myIT knowledge base.
Why are we changing the default limits
Our primary goals are to:
- Ensure the reliable operation of Creighton’s email system.
- Prevent misuse of Creighton email accounts.
- Maintain good standing with other organizations by minimizing spam and abuse.
Recently, Microsoft has reduced the number of messages allowed per day to help combat phishing. These attacks often involve compromised accounts sending malicious emails to the campus community.
Most Creighton Microsoft 365 accounts only send a few messages daily. Our aim is to apply reasonable sending limits for users who typically send low volumes of email without disrupting legitimate campus communication.
Questions?
If you have any questions or concerns, please contact the myIT Service Desk at 402-280-1111 or 800-329-1011 or visit myservice.creighton.edu.