Utility or program for converting 10.4's Mail.app mailboxes back to .mbox?

[Giaguara]

Would anyone know of a utility or a program for converting 10.4's Mail.app mailboxes back to .mbox?

I think I could want to give a try to some other mail program, and genericly, .mbox is nicer than a more proprietary format of mailboxes.
So, to import my mails (once rescued from a harddrive) I believe .mbox is far more supported format...

Also, suggestions of alternative mail programs that run fine in 10.4.3?
I need:
- working rules; can't crash if I have 50 rules and 50 mailboxes
- GPG support
- addressbook integration of Apple's AddressBook
- also, keeping the Mac M$-free = priceless, so not even thinking about Entrourage.

 

[Hawk Wings]

I think that CosmicSoft's emlxconvert is what you need.

 

[Giaguara]

I'll give it a try once DiskWarrior finishes repairing the partition ..