git-mailsplit(1): Totally braindamaged mbox ...

NAME

<mbox>: Mbox file to split. If not given, the mbox is read from the standard input.
<directory>: Directory in which to place the individual messages.
-b: If any file doesn't begin with a From line, assume it is a single mail message instead of signaling error.
-d<prec>: Instead of the default 4 digits with leading zeros, different precision can be specified for the generated filenames.
-f<nn>: Skip the first <nn> numbers, for example if -f3 is specified, start the numbering with 0004.