>* Apple Mail--
> The weirdest thing is that while the other methods had
>a few thousand messages in my In mailbox, this direct conversion
>ended up with nearly 21,000. Somehow it retrieved thousands of
>messages that I had previously trashed in Eudora. Is it possible
>that Eudora never actually deletes messages even when you do Empty
>Trash, and thus these are still within the raw In file, unnoticed
>by Eudora but captured by Mail when it imported the In file?
Yep, I think that's what happened. I realized after I started the
upgrade to El Capitan yesterday that I had not compressed my Eudora
mailbox before quitting Eudora for the final time. The following
(very cutely named) article points out that unless you do that,
the raw mailbox file still contains the deleted messages; they've
only been removed from the index.
http://tidbits.com/article/12382
Evidently EMC and EMA go by the index, but Apple Mail's conversion
tool imports the entire mailbox. I see that my In mailbox after
conversion by EMA is only about 1/3 of the size it was in Eudora.
So apparently EMA didn't simply ignore the deleted messages in its
new index, it outright skipped over them when converting my Eudora
mail. So they are now gone, gone, gone as they should be.
Patty