appending messages in imaplib

[huw.lynes at gmail.com]

>On google the first link is... a Python script.

>http://home.tiscali.cz:8080/~cz210552/distfiles/mbox2imap.py

>And there are other entries...

That appears to contain the magic I need thanks. It just use python
mailbox so adding in MH support should be trivial. Then I need to add
some directory walking logic around it and all should be good.

Just ran a 1500 mail mbox through it and it worked like a charm.

Cheers,
Huw