Usage: mbox2eml [options] -f MBOX-FILE -d DEST-DIR
Obligatory Options:
  --output-dir | -d :
    This is the output directory, where the eml-files are geing saved.
  --input-file | -f :
    This is the input file which shall be divided into eml-files.
    This file MUST be in mbox format as described here:
    http://www.die.net/doc/linux/man/man5/mbox.5.html
Optional Options:
  --help | -h :
    Displays this text.
Advanced Options:
THESE OPTIONS ARE VERY DANGEROUS!!!
PLEASE READ THE README-FILE VERY CAREFULLY.
  --unbitstuff | -u :
    Turns on the 'unbitstuff' functionality.
  --unbitstuff-char | -c :
    This is the character, which will be removed when 'unbitstuff'ing.
    Default: '>'
  --notrailing-space | -s :
    This option triggers, if a trailing space after 'From' is necessary.
    Default: trailing space is necessary
  --unbitstuff-targets | -t :
    These are the characters which may be between the 'unbitstuff-char'
    and 'From'. If only these characters are found, the affected line is
    'unbitstuff'ed.
    Default: ">"
  --thunderbird:
    This is an alias for -u -s -c " " -t " >"
    This option enables the 'unbitstuff'ing for mbox-files produced by
    Mozilla Thunderbird.
    Thundebird violates the common mbox practice to bitstuff every line
    starting with '[>]*From ' with a single '>'. Instead of this,
    Thunderbird bitstuffs every line starting with '[ >]*From' with a
    whitespace.
    Using this option may corrupt digitally signed (i.e. S/MIME or PGP/GPG)
    mails that have been encrypted using Thunderbird or EnigMail as
    Thunderbird is internally working with the 'false' bitstuffed
    mbox-format. So, if you try to fix this wrong format, you will modify
    the contenT of the mail but the signature will not reflect the
    modifications.
