It lacks the human part, but the MH format is another mbox alternative, and is already supported by several e-mail clients (At least mutt, sylpheed/claws, and e

It lacks the human part, but the MH format is another mbox alternative, and is already supported by several e-mail clients (At least mutt, sylpheed/claws, and evolution). I still use maildir because I have multiple programs mutating the directory at once, and it's the only game in town for that, judging from this article, M2dir does not attempt to address that either.