From: Les Mikesell <lesmikesell at gmail.com> > I have a bunch of old mail spread variously across dovecot maildirs > and mbox format files on several machines that are headed for the > trash. Is there anything considered to be a portable archive format > for mail messages, and if so are there tools to copy into it - or do I > have to pick a client and copy to its local storage? Maybe as .eml files? http://en.wikipedia.org/wiki/E-mail#Filename_extensions JD