Though the EAD list doesn't have a web interface, it does have an archive.
A great manual for learning how to search Listserv lists can be found here:
In the tutorial above, substitute the following address to search for messages
generated by the EAD list: [log in to unmask]
Bob Kosovsky student
Librarian Ph. D. program in music
Music Division Graduate Center
The New York Public Library City University of New York
[log in to unmask] [log in to unmask]
Listowner: [log in to unmask] ; [log in to unmask]
My opinions do not necessarily represent those of my institutions.