Welcome to JeffMail Employee or consultant login https://outlook.office365.com/owa/?realm=jefferson.edu O365 login for TJU students https://outlook.office365.com/students.jefferson.edu Legacy Gmail login for TJU students https://mail.google.com/a/jefferson.edu Jefferson alumni login https://alumnimail.jefferson.edu First time using JeffMail? Please use your Jefferson campus key and password. Problems Logging In? Please call 215-955-7975. Staff and faculty: More IS&T Solution Center support Thomas Jefferson University and Jefferson Health , All rights reserved.