> I'd interested to read mailing list messages (using gmail.com webmail), BUT most of threads seem to me illegible
the same here if I want to read LD on my Android phone (with googlemail). LD messages seem to come in some kind of binary file format that can be interpreted by most mail clients (such as Outlook) but if you save an LD message as a file, rename it to HTML, and open it in an Ascii editor or a browser, what you get is illegible binary stuff.
Anyway I don't think there is a way to change that. I don't know what kind of software creates the LD mailing list but it allows for HTML code. I think Yahoo mailing lists are generally Ascii-only and should be readable with all clients, but the LD list is a different animal.