Since I've written the lei-mail-formats manpage, I've been curious what other software differentiates between the various mbox formats and supports several/all of them?
AFAIK, none of the Perl Mail::* stuff does, nor does Email::Folder (AFAIK abandoned). I haven't looked at libraries for Python nor other languages... git supports mboxo and mboxrd, nowadays; but it seems like most other software only know how to deal with one of the mbox family (and mixing software on the same mbox leads to bad things). -- unsubscribe: one-click, see List-Unsubscribe header archive: https://public-inbox.org/meta/
