Script to unscramble proofpoint's urldefense URLs. Does not follow the link (and therefore does not tell proofpoint when you are reading your mail).

The following two settings ensure that URLs are shown unscrambled in mutt's pager and that URLs are unscrambled before editing a mail for replying:

set display_filter='/path/to/unproofpoint'                                                                                                                                                                
set editor='/path/to/unproofpoint %s; vim %s'