git-mailsplit - Simple UNIX mbox splitter program
git-mailsplit [-b] [-f<nn>] [-d<prec>] -o<directory> [--] [<mbox>…]
Splits a mbox file into a list of files: "0001" "0002" .. in the specified directory so you can process them further from there.
Mbox file to split. If not given, the mbox is read from the standard input.
Directory in which to place the individual messages.
If any file doesn’t begin with a From line, assume it is a single mail message instead of signaling error.
Instead of the default 4 digits with leading zeros, different precision can be specified for the generated filenames.
Skip the first <nn> numbers, for example if -f3 is specified, start the numbering with 0004.
Documentation by Junio C Hamano and the git-list <firstname.lastname@example.org>.
Part of the gitlink:git suite