When I try to set up Thunderbird on Andriod I run into a login issue. The email is actually in Microsoft and Thunderbird/Microsoft wants my Microsoft account info. This is not my email account info and I can't change it. My email address is username@alumni.caltech.edu, but my login name on the server is username@alumni.caltech.onmicrosoft.com. I am able to change it on Thunderbird for Windows desktop and I got it to work in K-9 email a long time ago, but the new Thunderbird for Android is not allowing me to change the login name and insists that I use my Microsoft account info which does not work for this email.

Thank you for your help.