Import multipart email properly

I have a significant corpus of email messages that I wanted to get a handle on. I thought DEVONthink might do the job.

No.

If you import a mail message that is multipart/alternative, it imports neither part, leaving only a ? in the body of the message.

It might have been so useful, too.

How did you try to import the mails? Using scripts? The scripting possibilities of Appleā€™s Mail are limited but an mbox import will come (as this is the standard unix mailbox format - probably the only standardized mailbox format at all).