How to split mailbox into single file per message?

Question

I\'d like to split my inbox into separate files (one file per one message) by bash command, or may be simple program in Java. How can I do it?

WBR, Thanx.

Answer 1

If you don't have formail, you can also use this Perl oneliner (copied from here, and just tested on a Thunderbird Inbox I needed to split)

perl -pe 'open STDOUT, ">out".++$n if /^From /' < $IN > before_first

or, to have 0-padded numbers:

perl -pe 'open STDOUT, sprintf(">m%05d.mbx", ++$n) if /^From /' < $IN > before-first