I would like to let users of my web site confirm their email addresses using OpenID. In addition to another problem which I have posted in another thread, I am missing support for EAUT. EAUT is a protocol that allows email providers to publish how their email addresses map to OpenID URLs. Without EAUT, I would have to create a mapping table that serves this purpose myself. I could do this for a few email providers but I wouldn't want to create a list of all email providers in the world by hand.
I don't see why you guys at Yahoo haven't done this yet. You just need to put some static information on your web server to accomplish this.
I wanted to link to a wonderful website about EAUT here ( http://eaut.org ) but unfortunately it seems to be down.