UST Webmail
Celt Login Authentication System Enabled

Welcome to University of St. Thomas Webmail!


The University of St. Thomas provides email accounts to the University community to share information and knowledge in support of the University's mission of education, research and public service and to conduct the University's business.

Having problems logging in?


  • Did you use a bookmark to access this page? Delete your bookmark and click here before you recreate it.
  • Passwords expire every 120 days. If your password has expired, you may reset it here.
  • Have you forgotten your password? If so, you may reset it here.
  • Have you activated your Celt Login ID? Beginning April 25, 2010 all users must activate their Celt Login ID. More information can be found on the Information Technology Website.
  • If you experience difficulty activating or logging in with your Celt Login ID, contact the IT Help Desk at ithelpdesk@stthom.edu or 713/525-6900.