Mass Email Limits

Summary

UofL applies email sending limits to protect against spam, viruses and mass emailing threats. Knowing these limits helps you avoid sending errors and ensures your messages reach their recipients.

Body

Outlook: How to Understand UofL Email Sending Limits

 

Before You Begin:

  • Make sure you are using your UofL email account.
  • Understand that these limits apply to all UofL email users.

Objective or Task:

Learn the sending limits for your UofL email account to avoid delivery issues.


Instructions:

  1. Check the Recipient Limit

    • You can include up to 500 recipients on a single email message.
    • A public group counts as one recipient.
  2. Check the Message Rate Limit

    • You can send up to 30 email messages per minute from your account.
  3. Check the Recipient Rate Limit

    • You can send email messages to a maximum of 10,000 recipients per day.
  4. Plan Large Mailings Carefully

    • If you need to email more than these limits allow consider breaking up your mailing or using approved mass email tools.

Outcome:

After reviewing these limits you will be able to send emails without exceeding UofL’s restrictions, reducing the risk of delivery failures or account lockout.


Further Readings:


Need Additional Help

Contact the ITS HelpDesk: Call 502-852-7997 during business hours:

  • Monday through Thursday: 6:00am – 10:00pm
  • Friday: 6:00am – 5:00pm
  • Saturday: 7:00am – 5:00pm
  • Sunday: 10:00am – 10:00pm
  • University Holidays: 7:00am – 5:00pm
  • Closed on Thanksgiving, the day after Thanksgiving, and Christmas.

If you have an emergency during off hours, call the HelpDesk to be transferred to an on-call technician, or leave your request on voicemail. Your call will be returned the next day starting at 7am unless you specify a time.

Live Chat: Chat with the ITS HelpDesk during business hours.

Submit a Ticket: Use the self-service portal at http://service.louisville.edu to log requests or check the status of existing tickets.

In-Person Support: Visit the iTechConnect 1:1 help located on the lower level of the Miller Information Technology Center, Belknap Campus, during business hours.

Details

Details

Article ID: 20179
Created
Fri 10/10/25 2:46 PM
Modified
Tue 10/14/25 1:47 PM