What is Portal Login ?
Thunderbird Portal Login is the unified login solution for only the MTB, TLE and Lifetime Email applications.
WIth Portal Login, you need to login just once to access any of the Portal enabled applications. Eg. after you have logged into MTB, you will no longer be asked to re-login to TLE when you access a course page. Likewise, if you go to your Lifetime Email.
Portal Login will minimize the complexities of accessing various Thunderbird web applications, and allow you to move smoothly between them.