Not sure exactly what Baton Mail's requirements are, the home page doesn't seem to show any. But my guess is it needs a 68030 minimum.

I think I got as far as your did with Eudora Lite as well. You could probably setup another machine and run a SMTP server that would forward emails to another SMTP server. (If your ISP blocks the standard SMTP port, like mine.) I did this with hMailServer using my Hotmail account once.