With a little careful reading of the instructions, and even as a newbie Mac user, EMC imported some 7 years' (230 mailboxes) of mail from PC Eudora to OS X Apple Mail. The two scripts included in the package automated rebuilding of the imported mailboxes and edited and activated imported filters.

This program is the only one I've seen that does the whole job with very little effort on your part. And I've looked.

Congratulations to Aamann on a superb program. I'll send him a donation.